157520906 has 24 divisors (see below), whose sum is σ = 251825760. Its totient is φ = 73881576.

The previous prime is 157520903. The next prime is 157520921. The reversal of 157520906 is 609025751.

It is not an unprimeable number, because it can be changed into a prime (157520903) 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 11 ways as a sum of consecutive naturals, for example, 76235 + ... + 78273.

It is an arithmetic number, because the mean of its divisors is an integer number (10492740).

Almost surely, 2^157520906 is an apocalyptic number.

157520906 is a deficient number, since it is larger than the sum of its proper divisors (94304854).

157520906 is a wasteful number, since it uses less digits than its factorization.

157520906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186 (or 2167 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 157520906 is about 12550.7332853503. The cubic root of 157520906 is about 540.0650424626.

The spelling of 157520906 in words is "one hundred fifty-seven million, five hundred twenty thousand, nine hundred six".