215163157 has 16 divisors (see below), whose sum is σ = 245735424. Its totient is φ = 186606000.

The previous prime is 215163149. The next prime is 215163161. The reversal of 215163157 is 751361512.

It is a cyclic number.

It is not a de Polignac number, because 215163157 - 2³ = 215163149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215163167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19768 + ... + 28654.

It is an arithmetic number, because the mean of its divisors is an integer number (15358464).

Almost surely, 2^215163157 is an apocalyptic number.

It is an amenable number.

215163157 is a deficient number, since it is larger than the sum of its proper divisors (30572267).

215163157 is a wasteful number, since it uses less digits than its factorization.

215163157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9000.

The product of its digits is 6300, while the sum is 31.

The square root of 215163157 is about 14668.4408510244. The cubic root of 215163157 is about 599.2241425448.

The spelling of 215163157 in words is "two hundred fifteen million, one hundred sixty-three thousand, one hundred fifty-seven".