79255981 has 8 divisors (see below), whose sum is σ = 92427200. Its totient is φ = 67933404.

The previous prime is 79255949. The next prime is 79255987. The reversal of 79255981 is 18955297.

It is not a de Polignac number, because 79255981 - 2⁵ = 79255949 is a prime.

It is a super-2 number, since 2×79255981² = 12563021048544722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79255987) 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, 115191 + ... + 115876.

It is an arithmetic number, because the mean of its divisors is an integer number (11553400).

Almost surely, 2^79255981 is an apocalyptic number.

It is an amenable number.

79255981 is a deficient number, since it is larger than the sum of its proper divisors (13171219).

79255981 is an equidigital number, since it uses as much as digits as its factorization.

79255981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231088 (or 231074 counting only the distinct ones).

The product of its digits is 226800, while the sum is 46.

The square root of 79255981 is about 8902.5828274720. The cubic root of 79255981 is about 429.5469918222.

The spelling of 79255981 in words is "seventy-nine million, two hundred fifty-five thousand, nine hundred eighty-one".