79454581 has 16 divisors (see below), whose sum is σ = 87441408. Its totient is φ = 71953200.

The previous prime is 79454471. The next prime is 79454603. The reversal of 79454581 is 18545497.

It is not a de Polignac number, because 79454581 - 2¹⁵ = 79421813 is a prime.

It is a super-2 number, since 2×79454581² = 12626060883771122, 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 (79454381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32326 + ... + 34696.

It is an arithmetic number, because the mean of its divisors is an integer number (5465088).

Almost surely, 2^79454581 is an apocalyptic number.

It is an amenable number.

79454581 is a deficient number, since it is larger than the sum of its proper divisors (7986827).

79454581 is a wasteful number, since it uses less digits than its factorization.

79454581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472.

The product of its digits is 201600, while the sum is 43.

The square root of 79454581 is about 8913.7299151365. The cubic root of 79454581 is about 429.9054794949.

The spelling of 79454581 in words is "seventy-nine million, four hundred fifty-four thousand, five hundred eighty-one".