| Base | Representation |
|---|---|
| bin | 1100001100000… |
| … | …1000101000100 |
| 3 | 10120012021212221 |
| 4 | 3003001011010 |
| 5 | 101041410000 |
| 6 | 5023422124 |
| 7 | 1160351122 |
| oct | 303010504 |
| 9 | 116167787 |
| 10 | 51122500 |
| 11 | 26948100 |
| 12 | 15154944 |
| 13 | a78c300 |
| 14 | 6b0a912 |
| 15 | 474c61a |
| hex | 30c1144 |
51122500 has 135 divisors (see below), whose sum is σ = 133061313. Its totient is φ = 17160000.
The previous prime is 51122479. The next prime is 51122501. The reversal of 51122500 is 522115.
The square root of 51122500 is 7150.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in 7 ways, for example, as 50495236 + 627264 = 7106^2 + 792^2 .
It is a super-2 number, since 2×511225002 = 5227020012500000, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (51122501) by changing a digit.
It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 3932494 + ... + 3932506.
Almost surely, 251122500 is an apocalyptic number.
51122500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.
51122500 is the 7150-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 51122500
51122500 is an abundant number, since it is smaller than the sum of its proper divisors (81938813).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
51122500 is a wasteful number, since it uses less digits than its factorization.
51122500 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 72 (or 31 counting only the distinct ones).
The product of its (nonzero) digits is 100, while the sum is 16.
The cubic root of 51122500 is about 371.1396562784.
Multiplying 51122500 by its sum of digits (16), we get a square (817960000 = 286002).
Multiplying 51122500 by its product of nonzero digits (100), we get a square (5112250000 = 715002).
51122500 divided by its product of nonzero digits (100) gives a square (511225 = 7152).
Adding to 51122500 its reverse (522115), we get a palindrome (51644615).
The spelling of 51122500 in words is "fifty-one million, one hundred twenty-two thousand, five hundred".
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