53256564 has 36 divisors (see below), whose sum is σ = 134954820. Its totient is φ = 17708160.

The previous prime is 53256547. The next prime is 53256583. The reversal of 53256564 is 46565235.

It is a happy number.

53256564 is a `hidden beast` number, since 5 + 32 + 565 + 64 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23444964 + 29811600 = 4842^2 + 5460^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 14992 + ... + 18200.

It is an arithmetic number, because the mean of its divisors is an integer number (3748745).

Almost surely, 2^53256564 is an apocalyptic number.

It is an amenable number.

53256564 is an abundant number, since it is smaller than the sum of its proper divisors (81698256).

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

53256564 is a wasteful number, since it uses less digits than its factorization.

53256564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3680 (or 3675 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 53256564 is about 7297.7095036731. The cubic root of 53256564 is about 376.2337180550.

The spelling of 53256564 in words is "fifty-three million, two hundred fifty-six thousand, five hundred sixty-four".