79557897 has 12 divisors (see below), whose sum is σ = 110891984. Its totient is φ = 50731560.

The previous prime is 79557857. The next prime is 79557899. The reversal of 79557897 is 79875597.

It is not a de Polignac number, because 79557897 - 2⁶ = 79557833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79557899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23479 + ... + 26652.

Almost surely, 2^79557897 is an apocalyptic number.

It is an amenable number.

79557897 is a deficient number, since it is larger than the sum of its proper divisors (31334087).

79557897 is a wasteful number, since it uses less digits than its factorization.

79557897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50180 (or 50157 counting only the distinct ones).

The product of its digits is 5556600, while the sum is 57.

The square root of 79557897 is about 8919.5233617049. The cubic root of 79557897 is about 430.0917363316.

The spelling of 79557897 in words is "seventy-nine million, five hundred fifty-seven thousand, eight hundred ninety-seven".