51319924 has 12 divisors (see below), whose sum is σ = 89964000. Its totient is φ = 25615928.

The previous prime is 51319913. The next prime is 51319943. The reversal of 51319924 is 42991315.

It is a self number, because there is not a number n which added to its sum of digits gives 51319924.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8314 + ... + 13105.

It is an arithmetic number, because the mean of its divisors is an integer number (7497000).

Almost surely, 2^51319924 is an apocalyptic number.

It is an amenable number.

51319924 is a deficient number, since it is larger than the sum of its proper divisors (38644076).

51319924 is a wasteful number, since it uses less digits than its factorization.

51319924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22022 (or 22020 counting only the distinct ones).

The product of its digits is 9720, while the sum is 34.

The square root of 51319924 is about 7163.7925709780. The cubic root of 51319924 is about 371.6167962026.

The spelling of 51319924 in words is "fifty-one million, three hundred nineteen thousand, nine hundred twenty-four".