157198537 has 8 divisors (see below), whose sum is σ = 164162304. Its totient is φ = 150245568.

The previous prime is 157198523. The next prime is 157198543. The reversal of 157198537 is 735891751.

157198537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 157198537 - 2¹¹ = 157196489 is a prime.

It is a super-2 number, since 2×157198537² = 49422760069880738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157198577) 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, 45793 + ... + 49105.

It is an arithmetic number, because the mean of its divisors is an integer number (20520288).

Almost surely, 2^157198537 is an apocalyptic number.

It is an amenable number.

157198537 is a deficient number, since it is larger than the sum of its proper divisors (6963767).

157198537 is a wasteful number, since it uses less digits than its factorization.

157198537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5399.

The product of its digits is 264600, while the sum is 46.

The square root of 157198537 is about 12537.8840718839. The cubic root of 157198537 is about 539.6963736647.

The spelling of 157198537 in words is "one hundred fifty-seven million, one hundred ninety-eight thousand, five hundred thirty-seven".