157198522 has 16 divisors (see below), whose sum is σ = 254154600. Its totient is φ = 72490752.

The previous prime is 157198513. The next prime is 157198523. The reversal of 157198522 is 225891751.

It can be written as a sum of positive squares in 4 ways, for example, as 15374241 + 141824281 = 3921^2 + 11909^2 .

It is a super-2 number, since 2×157198522² = 49422750637968968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157198523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43854 + ... + 47302.

Almost surely, 2^157198522 is an apocalyptic number.

157198522 is a deficient number, since it is larger than the sum of its proper divisors (96956078).

157198522 is a wasteful number, since it uses less digits than its factorization.

157198522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5217.

The product of its digits is 50400, while the sum is 40.

The square root of 157198522 is about 12537.8834736968. The cubic root of 157198522 is about 539.6963564986.

The spelling of 157198522 in words is "one hundred fifty-seven million, one hundred ninety-eight thousand, five hundred twenty-two".