79575381 has 6 divisors (see below), whose sum is σ = 114942230. Its totient is φ = 53050248.

The previous prime is 79575373. The next prime is 79575389. The reversal of 79575381 is 18357597.

79575381 is a `hidden beast` number, since 79 + 575 + 3 + 8 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (79575373) and next prime (79575389).

It can be written as a sum of positive squares in only one way, i.e., 52794756 + 26780625 = 7266^2 + 5175^2 .

It is not a de Polignac number, because 79575381 - 2³ = 79575373 is a prime.

It is a super-2 number, since 2×79575381² = 12664482522590322, 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 (79575389) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4420846 + ... + 4420863.

Almost surely, 2^79575381 is an apocalyptic number.

It is an amenable number.

79575381 is a deficient number, since it is larger than the sum of its proper divisors (35366849).

79575381 is a wasteful number, since it uses less digits than its factorization.

79575381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8841715 (or 8841712 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 79575381 is about 8920.5034050775. The cubic root of 79575381 is about 430.1232403198.

It can be divided in two parts, 795 and 75381, that added together give a square (76176 = 276²).

The spelling of 79575381 in words is "seventy-nine million, five hundred seventy-five thousand, three hundred eighty-one".