157297864 has 16 divisors (see below), whose sum is σ = 295675020. Its totient is φ = 78451200.

The previous prime is 157297831. The next prime is 157297867. The reversal of 157297864 is 468792751.

It can be written as a sum of positive squares in 2 ways, for example, as 152324964 + 4972900 = 12342^2 + 2230^2 .

It is not an unprimeable number, because it can be changed into a prime (157297867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21309 + ... + 27724.

Almost surely, 2^157297864 is an apocalyptic number.

It is an amenable number.

157297864 is a deficient number, since it is larger than the sum of its proper divisors (138377156).

157297864 is a wasteful number, since it uses less digits than its factorization.

157297864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49440 (or 49436 counting only the distinct ones).

The product of its digits is 846720, while the sum is 49.

The square root of 157297864 is about 12541.8445214410. The cubic root of 157297864 is about 539.8100200471.

It can be divided in two parts, 15729 and 7864, that multiplied together give a triangular number (123692856 = T₁₅₇₂₈).

The spelling of 157297864 in words is "one hundred fifty-seven million, two hundred ninety-seven thousand, eight hundred sixty-four".