157885172 has 6 divisors (see below), whose sum is σ = 276299058. Its totient is φ = 78942584.

The previous prime is 157885159. The next prime is 157885187. The reversal of 157885172 is 271588751.

It can be written as a sum of positive squares in only one way, i.e., 134420836 + 23464336 = 11594^2 + 4844^2 .

It is a congruent number.

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, 19735643 + ... + 19735650.

It is an arithmetic number, because the mean of its divisors is an integer number (46049843).

Almost surely, 2^157885172 is an apocalyptic number.

It is an amenable number.

157885172 is a deficient number, since it is larger than the sum of its proper divisors (118413886).

157885172 is a wasteful number, since it uses less digits than its factorization.

157885172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39471297 (or 39471295 counting only the distinct ones).

The product of its digits is 156800, while the sum is 44.

The square root of 157885172 is about 12565.2366471945. The cubic root of 157885172 is about 540.4810208635.

The spelling of 157885172 in words is "one hundred fifty-seven million, eight hundred eighty-five thousand, one hundred seventy-two".