157975907 has 6 divisors (see below), whose sum is σ = 163237284. Its totient is φ = 152878980.

The previous prime is 157975877. The next prime is 157975943. The reversal of 157975907 is 709579751.

It is a de Polignac number, because none of the positive numbers 2^k-157975907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157975997) 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 5 ways as a sum of consecutive naturals, for example, 81233 + ... + 83154.

It is an arithmetic number, because the mean of its divisors is an integer number (27206214).

Almost surely, 2^157975907 is an apocalyptic number.

157975907 is a deficient number, since it is larger than the sum of its proper divisors (5261377).

157975907 is an equidigital number, since it uses as much as digits as its factorization.

157975907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164449 (or 164418 counting only the distinct ones).

The product of its (nonzero) digits is 694575, while the sum is 50.

The square root of 157975907 is about 12568.8466853566. The cubic root of 157975907 is about 540.5845373483.

The spelling of 157975907 in words is "one hundred fifty-seven million, nine hundred seventy-five thousand, nine hundred seven".