157198900 has 18 divisors (see below), whose sum is σ = 341121830. Its totient is φ = 62879520.

The previous prime is 157198897. The next prime is 157198931. The reversal of 157198900 is 9891751.

It is a happy number.

157198900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3984016 + 153214884 = 1996^2 + 12378^2 .

It is a super-2 number, since 2×157198900² = 49422988322420000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 785895 + ... + 786094.

Almost surely, 2^157198900 is an apocalyptic number.

157198900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157198900 is an abundant number, since it is smaller than the sum of its proper divisors (183922930).

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

157198900 is a wasteful number, since it uses less digits than its factorization.

157198900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572003 (or 1571996 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 157198900 is about 12537.8985480024. The cubic root of 157198900 is about 539.6967890834.

The spelling of 157198900 in words is "one hundred fifty-seven million, one hundred ninety-eight thousand, nine hundred".