157656565 has 32 divisors (see below), whose sum is σ = 213995520. Its totient is φ = 110510400.

The previous prime is 157656563. The next prime is 157656571. The reversal of 157656565 is 565656751.

It is not a de Polignac number, because 157656565 - 2¹ = 157656563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157656563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183106 + ... + 183964.

It is an arithmetic number, because the mean of its divisors is an integer number (6687360).

Almost surely, 2^157656565 is an apocalyptic number.

It is an amenable number.

157656565 is a deficient number, since it is larger than the sum of its proper divisors (56338955).

157656565 is a wasteful number, since it uses less digits than its factorization.

157656565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993.

The product of its digits is 945000, while the sum is 46.

The square root of 157656565 is about 12556.1365475213. The cubic root of 157656565 is about 540.2200349296.

The spelling of 157656565 in words is "one hundred fifty-seven million, six hundred fifty-six thousand, five hundred sixty-five".