51912408 has 32 divisors (see below), whose sum is σ = 136612800. Its totient is φ = 16393248.

The previous prime is 51912397. The next prime is 51912409. The reversal of 51912408 is 80421915.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51912409) 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, 56466 + ... + 57377.

It is an arithmetic number, because the mean of its divisors is an integer number (4269150).

Almost surely, 2^51912408 is an apocalyptic number.

It is an amenable number.

51912408 is an abundant number, since it is smaller than the sum of its proper divisors (84700392).

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

51912408 is a wasteful number, since it uses less digits than its factorization.

51912408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113871 (or 113867 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 51912408 is about 7205.0265787157. The cubic root of 51912408 is about 373.0414221812.

The spelling of 51912408 in words is "fifty-one million, nine hundred twelve thousand, four hundred eight".