53402864 has 20 divisors (see below), whose sum is σ = 104717256. Its totient is φ = 26379072.

The previous prime is 53402837. The next prime is 53402873. The reversal of 53402864 is 46820435.

It is a self number, because there is not a number n which added to its sum of digits gives 53402864.

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, 18779 + ... + 21434.

Almost surely, 2^53402864 is an apocalyptic number.

It is an amenable number.

53402864 is a deficient number, since it is larger than the sum of its proper divisors (51314392).

53402864 is a wasteful number, since it uses less digits than its factorization.

53402864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40304 (or 40298 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 53402864 is about 7307.7263221880. The cubic root of 53402864 is about 376.5779176748.

The spelling of 53402864 in words is "fifty-three million, four hundred two thousand, eight hundred sixty-four".