157197522 has 16 divisors (see below), whose sum is σ = 314668800. Its totient is φ = 52353552.

The previous prime is 157197473. The next prime is 157197539. The reversal of 157197522 is 225791751.

It is a happy number.

157197522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×157197522² = 49422121845880968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3522 + ... + 18077.

It is an arithmetic number, because the mean of its divisors is an integer number (19666800).

Almost surely, 2^157197522 is an apocalyptic number.

157197522 is an abundant number, since it is smaller than the sum of its proper divisors (157471278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157197522 is a wasteful number, since it uses less digits than its factorization.

157197522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22817.

The product of its digits is 44100, while the sum is 39.

The square root of 157197522 is about 12537.8435944942. The cubic root of 157197522 is about 539.6952120911.

The spelling of 157197522 in words is "one hundred fifty-seven million, one hundred ninety-seven thousand, five hundred twenty-two".