51137412 has 24 divisors (see below), whose sum is σ = 120085056. Its totient is φ = 16936608.

The previous prime is 51137407. The next prime is 51137453. The reversal of 51137412 is 21473115.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11688 + ... + 15455.

It is an arithmetic number, because the mean of its divisors is an integer number (5003544).

Almost surely, 2^51137412 is an apocalyptic number.

It is an amenable number.

51137412 is an abundant number, since it is smaller than the sum of its proper divisors (68947644).

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

51137412 is a wasteful number, since it uses less digits than its factorization.

51137412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27307 (or 27305 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 51137412 is about 7151.0427211701. The cubic root of 51137412 is about 371.1757388678.

The spelling of 51137412 in words is "fifty-one million, one hundred thirty-seven thousand, four hundred twelve".