79582221 has 12 divisors (see below), whose sum is σ = 115086972. Its totient is φ = 52992576.

The previous prime is 79582211. The next prime is 79582259. The reversal of 79582221 is 12228597.

79582221 is a `hidden beast` number, since 79 + 582 + 2 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21288996 + 58293225 = 4614^2 + 7635^2 .

It is not a de Polignac number, because 79582221 - 2⁶ = 79582157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79582211) 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 11 ways as a sum of consecutive naturals, for example, 3715 + ... + 13151.

It is an arithmetic number, because the mean of its divisors is an integer number (9590581).

Almost surely, 2^79582221 is an apocalyptic number.

It is an amenable number.

79582221 is a deficient number, since it is larger than the sum of its proper divisors (35504751).

79582221 is a wasteful number, since it uses less digits than its factorization.

79582221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10380 (or 10377 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 79582221 is about 8920.8867832744. The cubic root of 79582221 is about 430.1355638912.

The spelling of 79582221 in words is "seventy-nine million, five hundred eighty-two thousand, two hundred twenty-one".