53257656 has 32 divisors (see below), whose sum is σ = 134522640. Its totient is φ = 17568768.

The previous prime is 53257643. The next prime is 53257669. The reversal of 53257656 is 65675235.

53257656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (53257643) and next prime (53257669).

It is a super-2 number, since 2×53257656² = 5672755845228672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9111 + ... + 13766.

Almost surely, 2^53257656 is an apocalyptic number.

It is an amenable number.

53257656 is an abundant number, since it is smaller than the sum of its proper divisors (81264984).

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

53257656 is a wasteful number, since it uses less digits than its factorization.

53257656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22983 (or 22979 counting only the distinct ones).

The product of its digits is 189000, while the sum is 39.

The square root of 53257656 is about 7297.7843212855. The cubic root of 53257656 is about 376.2362895340.

The spelling of 53257656 in words is "fifty-three million, two hundred fifty-seven thousand, six hundred fifty-six".