79750521 has 16 divisors (see below), whose sum is σ = 118880320. Its totient is φ = 52837920.

The previous prime is 79750513. The next prime is 79750547. The reversal of 79750521 is 12505797.

It is not a de Polignac number, because 79750521 - 2³ = 79750513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79750511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4660 + ... + 13461.

It is an arithmetic number, because the mean of its divisors is an integer number (7430020).

Almost surely, 2^79750521 is an apocalyptic number.

It is an amenable number.

79750521 is a deficient number, since it is larger than the sum of its proper divisors (39129799).

79750521 is a wasteful number, since it uses less digits than its factorization.

79750521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18293 (or 18287 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 36.

The square root of 79750521 is about 8930.3147200981. The cubic root of 79750521 is about 430.4385664258.

The spelling of 79750521 in words is "seventy-nine million, seven hundred fifty thousand, five hundred twenty-one".