53863864 has 32 divisors (see below), whose sum is σ = 106698240. Its totient is φ = 25452000.

The previous prime is 53863819. The next prime is 53863867. The reversal of 53863864 is 46836835.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 53863864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53863867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8139 + ... + 13189.

It is an arithmetic number, because the mean of its divisors is an integer number (3334320).

Almost surely, 2^53863864 is an apocalyptic number.

It is an amenable number.

53863864 is a deficient number, since it is larger than the sum of its proper divisors (52834376).

53863864 is a wasteful number, since it uses less digits than its factorization.

53863864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5131 (or 5127 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The square root of 53863864 is about 7339.2005014170. The cubic root of 53863864 is about 377.6584169113.

The spelling of 53863864 in words is "fifty-three million, eight hundred sixty-three thousand, eight hundred sixty-four".