51303912 has 64 divisors (see below), whose sum is σ = 140564160. Its totient is φ = 15475200.

The previous prime is 51303899. The next prime is 51303953. The reversal of 51303912 is 21930315.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98212 + ... + 98732.

It is an arithmetic number, because the mean of its divisors is an integer number (2196315).

Almost surely, 2^51303912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51303912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70282080).

51303912 is an abundant number, since it is smaller than the sum of its proper divisors (89260248).

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

51303912 is a wasteful number, since it uses less digits than its factorization.

51303912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 910 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 51303912 is about 7162.6749193301. The cubic root of 51303912 is about 371.5781435921.

The spelling of 51303912 in words is "fifty-one million, three hundred three thousand, nine hundred twelve".