157131615 has 16 divisors (see below), whose sum is σ = 264643200. Its totient is φ = 79392672.

The previous prime is 157131581. The next prime is 157131631. The reversal of 157131615 is 516131751.

It is not a de Polignac number, because 157131615 - 2⁹ = 157131103 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275385 + ... + 275954.

It is an arithmetic number, because the mean of its divisors is an integer number (16540200).

Almost surely, 2^157131615 is an apocalyptic number.

157131615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

157131615 is a deficient number, since it is larger than the sum of its proper divisors (107511585).

157131615 is a wasteful number, since it uses less digits than its factorization.

157131615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551366.

The product of its digits is 3150, while the sum is 30.

The square root of 157131615 is about 12535.2149961618. The cubic root of 157131615 is about 539.6197769230.

The spelling of 157131615 in words is "one hundred fifty-seven million, one hundred thirty-one thousand, six hundred fifteen".