157571812 has 6 divisors (see below), whose sum is σ = 275750678. Its totient is φ = 78785904.

The previous prime is 157571801. The next prime is 157571837. The reversal of 157571812 is 218175751.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 137733696 + 19838116 = 11736^2 + 4454^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 19696473 + ... + 19696480.

Almost surely, 2^157571812 is an apocalyptic number.

It is an amenable number.

157571812 is a deficient number, since it is larger than the sum of its proper divisors (118178866).

157571812 is a wasteful number, since it uses less digits than its factorization.

157571812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39392957 (or 39392955 counting only the distinct ones).

The product of its digits is 19600, while the sum is 37.

The square root of 157571812 is about 12552.7611305242. The cubic root of 157571812 is about 540.1232137676.

The spelling of 157571812 in words is "one hundred fifty-seven million, five hundred seventy-one thousand, eight hundred twelve".