157324691 has 4 divisors (see below), whose sum is σ = 157402800. Its totient is φ = 157246584.

The previous prime is 157324649. The next prime is 157324697. The reversal of 157324691 is 196423751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196423751 = 11093 ⋅17707.

It is a cyclic number.

It is not a de Polignac number, because 157324691 - 2⁶ = 157324627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157324697) 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, 35951 + ... + 40088.

It is an arithmetic number, because the mean of its divisors is an integer number (39350700).

Almost surely, 2^157324691 is an apocalyptic number.

157324691 is a deficient number, since it is larger than the sum of its proper divisors (78109).

157324691 is an equidigital number, since it uses as much as digits as its factorization.

157324691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78108.

The product of its digits is 45360, while the sum is 38.

The square root of 157324691 is about 12542.9139756278. The cubic root of 157324691 is about 539.8407063299.

The spelling of 157324691 in words is "one hundred fifty-seven million, three hundred twenty-four thousand, six hundred ninety-one".