52515864 has 40 divisors (see below), whose sum is σ = 147094860. Its totient is φ = 17505072.

The previous prime is 52515851. The next prime is 52515871. The reversal of 52515864 is 46851525.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39874 + ... + 41169.

Almost surely, 2^52515864 is an apocalyptic number.

52515864 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

52515864 is an abundant number, since it is smaller than the sum of its proper divisors (94578996).

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

52515864 is a wasteful number, since it uses less digits than its factorization.

52515864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81061 (or 81048 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 52515864 is about 7246.7830104123. The cubic root of 52515864 is about 374.4813309505.

The spelling of 52515864 in words is "fifty-two million, five hundred fifteen thousand, eight hundred sixty-four".