79997275 has 6 divisors (see below), whose sum is σ = 99196652. Its totient is φ = 63997800.

The previous prime is 79997251. The next prime is 79997279. The reversal of 79997275 is 57279997.

It is not a de Polignac number, because 79997275 - 2⁷ = 79997147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79997279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1599921 + ... + 1599970.

Almost surely, 2^79997275 is an apocalyptic number.

79997275 is a deficient number, since it is larger than the sum of its proper divisors (19199377).

79997275 is a wasteful number, since it uses less digits than its factorization.

79997275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3199901 (or 3199896 counting only the distinct ones).

The product of its digits is 2500470, while the sum is 55.

The square root of 79997275 is about 8944.1195765710. The cubic root of 79997275 is about 430.8820455887.

The spelling of 79997275 in words is "seventy-nine million, nine hundred ninety-seven thousand, two hundred seventy-five".