Base | Representation |
---|---|
bin | 1100001101100… |
… | …1001000000000 |
3 | 10120101021222210 |
4 | 3003121020000 |
5 | 101103032432 |
6 | 5025502120 |
7 | 1161241224 |
oct | 303311000 |
9 | 116337883 |
10 | 51220992 |
11 | 26a050a9 |
12 | 151a1940 |
13 | a7c50a4 |
14 | 6b34784 |
15 | 476b8cc |
hex | 30d9200 |
51220992 has 40 divisors (see below), whose sum is σ = 136460016. Its totient is φ = 17073152.
The previous prime is 51220991. The next prime is 51220997. The reversal of 51220992 is 29902215.
51220992 is a modest number, since divided by 20992 gives 512 as remainder.
It is not an unprimeable number, because it can be changed into a prime (51220991) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15138 + ... + 18209.
Almost surely, 251220992 is an apocalyptic number.
It is an amenable number.
51220992 is an abundant number, since it is smaller than the sum of its proper divisors (85239024).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
51220992 is an equidigital number, since it uses as much as digits as its factorization.
51220992 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 33368 (or 33352 counting only the distinct ones).
The product of its (nonzero) digits is 3240, while the sum is 30.
The square root of 51220992 is about 7156.8842382702. The cubic root of 51220992 is about 371.3778477930.
The spelling of 51220992 in words is "fifty-one million, two hundred twenty thousand, nine hundred ninety-two".
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