157712907 has 24 divisors (see below), whose sum is σ = 235835712. Its totient is φ = 92973600.

The previous prime is 157712897. The next prime is 157712917. The reversal of 157712907 is 709217751.

It is an interprime number because it is at equal distance from previous prime (157712897) and next prime (157712917).

It is not a de Polignac number, because 157712907 - 2⁸ = 157712651 is a prime.

It is a super-2 number, since 2×157712907² = 49746722068781298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157712917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43432 + ... + 46922.

It is an arithmetic number, because the mean of its divisors is an integer number (9826488).

Almost surely, 2^157712907 is an apocalyptic number.

157712907 is a deficient number, since it is larger than the sum of its proper divisors (78122805).

157712907 is a wasteful number, since it uses less digits than its factorization.

157712907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3579 (or 3542 counting only the distinct ones).

The product of its (nonzero) digits is 30870, while the sum is 39.

The square root of 157712907 is about 12558.3799512517. The cubic root of 157712907 is about 540.2843803887.

The spelling of 157712907 in words is "one hundred fifty-seven million, seven hundred twelve thousand, nine hundred seven".