157215859 has 2 divisors, whose sum is σ = 157215860. Its totient is φ = 157215858.

The previous prime is 157215829. The next prime is 157215871. The reversal of 157215859 is 958512751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157215859 - 2²⁵ = 123661427 is a prime.

It is a super-2 number, since 2×157215859² = 49433652642215762, which contains 22 as substring.

It is equal to p_8827099 and since 157215859 and 8827099 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (157215809) by changing a digit.

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 as a sum of consecutive naturals, namely, 78607929 + 78607930.

It is an arithmetic number, because the mean of its divisors is an integer number (78607930).

Almost surely, 2^157215859 is an apocalyptic number.

157215859 is a deficient number, since it is larger than the sum of its proper divisors (1).

157215859 is an equidigital number, since it uses as much as digits as its factorization.

157215859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126000, while the sum is 43.

The square root of 157215859 is about 12538.5748392710. The cubic root of 157215859 is about 539.7161963200.

The spelling of 157215859 in words is "one hundred fifty-seven million, two hundred fifteen thousand, eight hundred fifty-nine".