157500913 has 4 divisors (see below), whose sum is σ = 160170480. Its totient is φ = 154831348.

The previous prime is 157500877. The next prime is 157500961. The reversal of 157500913 is 319005751.

157500913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157500913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157500983) 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, 1334695 + ... + 1334812.

It is an arithmetic number, because the mean of its divisors is an integer number (40042620).

Almost surely, 2^157500913 is an apocalyptic number.

It is an amenable number.

157500913 is a deficient number, since it is larger than the sum of its proper divisors (2669567).

157500913 is an equidigital number, since it uses as much as digits as its factorization.

157500913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669566.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 157500913 is about 12549.9367727491. The cubic root of 157500913 is about 540.0421926337.

The spelling of 157500913 in words is "one hundred fifty-seven million, five hundred thousand, nine hundred thirteen".