51930156 has 24 divisors (see below), whose sum is σ = 122832304. Its totient is φ = 17072640.

The previous prime is 51930127. The next prime is 51930157. The reversal of 51930156 is 65103915.

It is a super-2 number, since 2×51930156² = 5393482204368672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51930157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28765 + ... + 30516.

Almost surely, 2^51930156 is an apocalyptic number.

It is an amenable number.

51930156 is an abundant number, since it is smaller than the sum of its proper divisors (70902148).

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

51930156 is a wasteful number, since it uses less digits than its factorization.

51930156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59361 (or 59359 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 51930156 is about 7206.2581136121. The cubic root of 51930156 is about 373.0839295833.

The spelling of 51930156 in words is "fifty-one million, nine hundred thirty thousand, one hundred fifty-six".