79521512 has 48 divisors (see below), whose sum is σ = 183664260. Its totient is φ = 32073216.

The previous prime is 79521503. The next prime is 79521523. The reversal of 79521512 is 21512597.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 70795396 + 8726116 = 8414^2 + 2954^2 .

It is a super-2 number, since 2×79521512² = 12647341741532288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 698 + ... + 12630.

Almost surely, 2^79521512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79521512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91832130).

79521512 is an abundant number, since it is smaller than the sum of its proper divisors (104142748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79521512 is a wasteful number, since it uses less digits than its factorization.

79521512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11970 (or 11959 counting only the distinct ones).

The product of its digits is 6300, while the sum is 32.

The square root of 79521512 is about 8917.4835015266. The cubic root of 79521512 is about 430.0261602977.

The spelling of 79521512 in words is "seventy-nine million, five hundred twenty-one thousand, five hundred twelve".