51122300 has 18 divisors (see below), whose sum is σ = 110935608. Its totient is φ = 20448880.

The previous prime is 51122237. The next prime is 51122311. The reversal of 51122300 is 322115.

It is a happy number.

It is a super-2 number, since 2×51122300² = 5226979114580000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 255512 + ... + 255711.

Almost surely, 2^51122300 is an apocalyptic number.

51122300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51122300 is an abundant number, since it is smaller than the sum of its proper divisors (59813308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51122300 is a wasteful number, since it uses less digits than its factorization.

51122300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511237 (or 511230 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 51122300 is about 7149.9860139723. The cubic root of 51122300 is about 371.1391722904.

Adding to 51122300 its reverse (322115), we get a palindrome (51444415).

The spelling of 51122300 in words is "fifty-one million, one hundred twenty-two thousand, three hundred".