51486924 has 24 divisors (see below), whose sum is σ = 120255408. Its totient is φ = 17145280.

The previous prime is 51486917. The next prime is 51486947. The reversal of 51486924 is 42968415.

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, 18334 + ... + 20954.

It is an arithmetic number, because the mean of its divisors is an integer number (5010642).

Almost surely, 2^51486924 is an apocalyptic number.

It is an amenable number.

51486924 is an abundant number, since it is smaller than the sum of its proper divisors (68768484).

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

51486924 is a wasteful number, since it uses less digits than its factorization.

51486924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4265 (or 4263 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 51486924 is about 7175.4389412774. The cubic root of 51486924 is about 372.0194520988.

The spelling of 51486924 in words is "fifty-one million, four hundred eighty-six thousand, nine hundred twenty-four".