157075831 has 16 divisors (see below), whose sum is σ = 181560960. Its totient is φ = 134390880.

The previous prime is 157075823. The next prime is 157075859. The reversal of 157075831 is 138570751.

It is a cyclic number.

It is not a de Polignac number, because 157075831 - 2³ = 157075823 is a prime.

It is a super-2 number, since 2×157075831² = 49345633368681122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157075811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30420 + ... + 35206.

It is an arithmetic number, because the mean of its divisors is an integer number (11347560).

Almost surely, 2^157075831 is an apocalyptic number.

157075831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

157075831 is a deficient number, since it is larger than the sum of its proper divisors (24485129).

157075831 is a wasteful number, since it uses less digits than its factorization.

157075831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4974.

The product of its (nonzero) digits is 29400, while the sum is 37.

The square root of 157075831 is about 12532.9897071688. The cubic root of 157075831 is about 539.5559117516. Note that the first 3 decimals are identical.

The spelling of 157075831 in words is "one hundred fifty-seven million, seventy-five thousand, eight hundred thirty-one".