51995136 has 40 divisors (see below), whose sum is σ = 138522384. Its totient is φ = 17331200.

The previous prime is 51995131. The next prime is 51995143. The reversal of 51995136 is 63159915.

It is a junction number, because it is equal to n+sod(n) for n = 51995094 and 51995103.

It is not an unprimeable number, because it can be changed into a prime (51995131) 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, 15390 + ... + 18461.

Almost surely, 2^51995136 is an apocalyptic number.

It is an amenable number.

51995136 is an abundant number, since it is smaller than the sum of its proper divisors (86527248).

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

51995136 is an equidigital number, since it uses as much as digits as its factorization.

51995136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33872 (or 33856 counting only the distinct ones).

The product of its digits is 36450, while the sum is 39.

The square root of 51995136 is about 7210.7652853217. The cubic root of 51995136 is about 373.2394775405.

The spelling of 51995136 in words is "fifty-one million, nine hundred ninety-five thousand, one hundred thirty-six".