52135657 has 16 divisors (see below), whose sum is σ = 61465600. Its totient is φ = 44198784.

The previous prime is 52135637. The next prime is 52135667. The reversal of 52135657 is 75653125.

It is not a de Polignac number, because 52135657 - 2⁷ = 52135529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52135607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32488 + ... + 34054.

It is an arithmetic number, because the mean of its divisors is an integer number (3841600).

Almost surely, 2^52135657 is an apocalyptic number.

It is an amenable number.

52135657 is a deficient number, since it is larger than the sum of its proper divisors (9329943).

52135657 is an equidigital number, since it uses as much as digits as its factorization.

52135657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685 (or 1671 counting only the distinct ones).

The product of its digits is 31500, while the sum is 34.

The square root of 52135657 is about 7220.5025448372. The cubic root of 52135657 is about 373.5754115732.

The spelling of 52135657 in words is "fifty-two million, one hundred thirty-five thousand, six hundred fifty-seven".