79521523 has 2 divisors, whose sum is σ = 79521524. Its totient is φ = 79521522.

The previous prime is 79521503. The next prime is 79521527. The reversal of 79521523 is 32512597.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79521523 - 2⁹ = 79521011 is a prime.

It is not a weakly prime, because it can be changed into another prime (79521527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39760761 + 39760762.

It is an arithmetic number, because the mean of its divisors is an integer number (39760762).

Almost surely, 2^79521523 is an apocalyptic number.

79521523 is a deficient number, since it is larger than the sum of its proper divisors (1).

79521523 is an equidigital number, since it uses as much as digits as its factorization.

79521523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 79521523 is about 8917.4841182926. The cubic root of 79521523 is about 430.0261801259.

The spelling of 79521523 in words is "seventy-nine million, five hundred twenty-one thousand, five hundred twenty-three".