51479916 has 24 divisors (see below), whose sum is σ = 120249024. Its totient is φ = 17141520.

The previous prime is 51479903. The next prime is 51479917. The reversal of 51479916 is 61997415.

It is not an unprimeable number, because it can be changed into a prime (51479917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13831 + ... + 17153.

It is an arithmetic number, because the mean of its divisors is an integer number (5010376).

Almost surely, 2^51479916 is an apocalyptic number.

It is an amenable number.

51479916 is an abundant number, since it is smaller than the sum of its proper divisors (68769108).

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

51479916 is a wasteful number, since it uses less digits than its factorization.

51479916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4621 (or 4619 counting only the distinct ones).

The product of its digits is 68040, while the sum is 42.

The square root of 51479916 is about 7174.9505921644. The cubic root of 51479916 is about 372.0025725339.

The spelling of 51479916 in words is "fifty-one million, four hundred seventy-nine thousand, nine hundred sixteen".