157314997 has 4 divisors (see below), whose sum is σ = 179788576. Its totient is φ = 134841420.

The previous prime is 157314979. The next prime is 157315007. The reversal of 157314997 is 799413751.

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 not a de Polignac number, because 157314997 - 2⁷ = 157314869 is a prime.

It is a super-2 number, since 2×157314997² = 49496016562220018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157314947) 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, 11236779 + ... + 11236792.

It is an arithmetic number, because the mean of its divisors is an integer number (44947144).

Almost surely, 2^157314997 is an apocalyptic number.

It is an amenable number.

157314997 is a deficient number, since it is larger than the sum of its proper divisors (22473579).

157314997 is an equidigital number, since it uses as much as digits as its factorization.

157314997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22473578.

The product of its digits is 238140, while the sum is 46.

The square root of 157314997 is about 12542.5275363461. The cubic root of 157314997 is about 539.8296181715.

The spelling of 157314997 in words is "one hundred fifty-seven million, three hundred fourteen thousand, nine hundred ninety-seven".