79574513 has 2 divisors, whose sum is σ = 79574514. Its totient is φ = 79574512.

The previous prime is 79574483. The next prime is 79574533. The reversal of 79574513 is 31547597.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78357904 + 1216609 = 8852^2 + 1103^2 .

It is a cyclic number.

It is not a de Polignac number, because 79574513 - 2¹² = 79570417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (79574533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39787256 + 39787257.

It is an arithmetic number, because the mean of its divisors is an integer number (39787257).

Almost surely, 2^79574513 is an apocalyptic number.

It is an amenable number.

79574513 is a deficient number, since it is larger than the sum of its proper divisors (1).

79574513 is an equidigital number, since it uses as much as digits as its factorization.

79574513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132300, while the sum is 41.

The square root of 79574513 is about 8920.4547529820. The cubic root of 79574513 is about 430.1216764009.

The spelling of 79574513 in words is "seventy-nine million, five hundred seventy-four thousand, five hundred thirteen".