157165732 has 12 divisors (see below), whose sum is σ = 284524380. Its totient is φ = 75873056.

The previous prime is 157165727. The next prime is 157165733. The reversal of 157165732 is 237561751.

It can be written as a sum of positive squares in 2 ways, for example, as 46158436 + 111007296 = 6794^2 + 10536^2 .

It is a junction number, because it is equal to n+sod(n) for n = 157165691 and 157165700.

It is not an unprimeable number, because it can be changed into a prime (157165733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677323 + ... + 677554.

It is an arithmetic number, because the mean of its divisors is an integer number (23710365).

Almost surely, 2^157165732 is an apocalyptic number.

It is an amenable number.

157165732 is a deficient number, since it is larger than the sum of its proper divisors (127358648).

157165732 is a wasteful number, since it uses less digits than its factorization.

157165732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354910 (or 1354908 counting only the distinct ones).

The product of its digits is 44100, while the sum is 37.

The square root of 157165732 is about 12536.5757685263. The cubic root of 157165732 is about 539.6588288470.

The spelling of 157165732 in words is "one hundred fifty-seven million, one hundred sixty-five thousand, seven hundred thirty-two".