79157 has 4 divisors (see below), whose sum is σ = 85260. Its totient is φ = 73056.

The previous prime is 79153. The next prime is 79159. The reversal of 79157 is 75197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75197 = 29 ⋅2593.

It can be written as a sum of positive squares in 2 ways, for example, as 14641 + 64516 = 121^2 + 254^2 .

It is a cyclic number.

It is not a de Polignac number, because 79157 - 2² = 79153 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 (79151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3032 + ... + 3057.

It is an arithmetic number, because the mean of its divisors is an integer number (21315).

2⁷⁹¹⁵⁷ is an apocalyptic number.

It is an amenable number.

79157 is a deficient number, since it is larger than the sum of its proper divisors (6103).

79157 is a wasteful number, since it uses less digits than its factorization.

79157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6102.

The product of its digits is 2205, while the sum is 29.

The square root of 79157 is about 281.3485382937. The cubic root of 79157 is about 42.9368100160.

It can be divided in two parts, 791 and 57, that added together give a palindrome (848).

The spelling of 79157 in words is "seventy-nine thousand, one hundred fifty-seven".