53388657 has 24 divisors (see below), whose sum is σ = 88820160. Its totient is φ = 30270240.

The previous prime is 53388631. The next prime is 53388659. The reversal of 53388657 is 75688335.

It is not a de Polignac number, because 53388657 - 2²⁰ = 52340081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53388659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5019 + ... + 11487.

It is an arithmetic number, because the mean of its divisors is an integer number (3700840).

Almost surely, 2^53388657 is an apocalyptic number.

It is an amenable number.

53388657 is a deficient number, since it is larger than the sum of its proper divisors (35431503).

53388657 is a wasteful number, since it uses less digits than its factorization.

53388657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6613 (or 6610 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 53388657 is about 7306.7542041593. The cubic root of 53388657 is about 376.5445204836.

It can be divided in two parts, 53388 and 657, that added together give a palindrome (54045).

The spelling of 53388657 in words is "fifty-three million, three hundred eighty-eight thousand, six hundred fifty-seven".