157976457 has 4 divisors (see below), whose sum is σ = 210635280. Its totient is φ = 105317636.

The previous prime is 157976449. The next prime is 157976459. The reversal of 157976457 is 754679751.

It is a happy number.

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 not a de Polignac number, because 157976457 - 2³ = 157976449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157976459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26329407 + ... + 26329412.

It is an arithmetic number, because the mean of its divisors is an integer number (52658820).

Almost surely, 2^157976457 is an apocalyptic number.

It is an amenable number.

157976457 is a deficient number, since it is larger than the sum of its proper divisors (52658823).

157976457 is an equidigital number, since it uses as much as digits as its factorization.

157976457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52658822.

The product of its digits is 1852200, while the sum is 51.

The square root of 157976457 is about 12568.8685648311. The cubic root of 157976457 is about 540.5851647038.

The spelling of 157976457 in words is "one hundred fifty-seven million, nine hundred seventy-six thousand, four hundred fifty-seven".