157198563 has 20 divisors (see below), whose sum is σ = 235215288. Its totient is φ = 104626080.

The previous prime is 157198543. The next prime is 157198577. The reversal of 157198563 is 365891751.

It is a happy number.

157198563 is a `hidden beast` number, since 15 + 71 + 9 + 8 + 563 = 666.

It is not a de Polignac number, because 157198563 - 2⁶ = 157198499 is a prime.

It is a super-2 number, since 2×157198563² = 49422776418529938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157198513) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 64495 + ... + 66887.

Almost surely, 2^157198563 is an apocalyptic number.

157198563 is a deficient number, since it is larger than the sum of its proper divisors (78016725).

157198563 is an equidigital number, since it uses as much as digits as its factorization.

157198563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216 (or 3207 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 157198563 is about 12537.8851087414. The cubic root of 157198563 is about 539.6964034192.

The spelling of 157198563 in words is "one hundred fifty-seven million, one hundred ninety-eight thousand, five hundred sixty-three".