51156207 has 12 divisors (see below), whose sum is σ = 74571640. Its totient is φ = 33790608.

The previous prime is 51156181. The next prime is 51156241. The reversal of 51156207 is 70265115.

It is not a de Polignac number, because 51156207 - 2⁶ = 51156143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51151207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25093 + ... + 27054.

Almost surely, 2^51156207 is an apocalyptic number.

51156207 is a deficient number, since it is larger than the sum of its proper divisors (23415433).

51156207 is a wasteful number, since it uses less digits than its factorization.

51156207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52262 (or 52259 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 51156207 is about 7152.3567444584. The cubic root of 51156207 is about 371.2212071674.

The spelling of 51156207 in words is "fifty-one million, one hundred fifty-six thousand, two hundred seven".