157975566 has 32 divisors (see below), whose sum is σ = 372738048. Its totient is φ = 43679520.

The previous prime is 157975561. The next prime is 157975579. The reversal of 157975566 is 665579751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157975561) 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 15 ways as a sum of consecutive naturals, for example, 59365 + ... + 61968.

It is an arithmetic number, because the mean of its divisors is an integer number (11648064).

Almost surely, 2^157975566 is an apocalyptic number.

157975566 is an abundant number, since it is smaller than the sum of its proper divisors (214762482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157975566 is a wasteful number, since it uses less digits than its factorization.

157975566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121376.

The product of its digits is 1984500, while the sum is 51.

The square root of 157975566 is about 12568.8331200633. The cubic root of 157975566 is about 540.5841483872.

The spelling of 157975566 in words is "one hundred fifty-seven million, nine hundred seventy-five thousand, five hundred sixty-six".