79515157 has 8 divisors (see below), whose sum is σ = 80112384. Its totient is φ = 78920688.

The previous prime is 79515143. The next prime is 79515169. The reversal of 79515157 is 75151597.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79515157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79515857) 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, 121443 + ... + 122095.

It is an arithmetic number, because the mean of its divisors is an integer number (10014048).

Almost surely, 2^79515157 is an apocalyptic number.

It is an amenable number.

79515157 is a deficient number, since it is larger than the sum of its proper divisors (597227).

79515157 is a wasteful number, since it uses less digits than its factorization.

79515157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379.

The product of its digits is 55125, while the sum is 40.

The square root of 79515157 is about 8917.1271719091. The cubic root of 79515157 is about 430.0147047432.

The spelling of 79515157 in words is "seventy-nine million, five hundred fifteen thousand, one hundred fifty-seven".