79526521 has 4 divisors (see below), whose sum is σ = 80713552. Its totient is φ = 78339492.

The previous prime is 79526507. The next prime is 79526539. The reversal of 79526521 is 12562597.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12562597 = 29 ⋅433193.

It is a cyclic number.

It is not a de Polignac number, because 79526521 - 2⁹ = 79526009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79526581) 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 in 3 ways as a sum of consecutive naturals, for example, 593415 + ... + 593548.

It is an arithmetic number, because the mean of its divisors is an integer number (20178388).

Almost surely, 2^79526521 is an apocalyptic number.

It is an amenable number.

79526521 is a deficient number, since it is larger than the sum of its proper divisors (1187031).

79526521 is a wasteful number, since it uses less digits than its factorization.

79526521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187030.

The product of its digits is 37800, while the sum is 37.

The square root of 79526521 is about 8917.7643498805. The cubic root of 79526521 is about 430.0351891159.

The spelling of 79526521 in words is "seventy-nine million, five hundred twenty-six thousand, five hundred twenty-one".