79521101 has 4 divisors (see below), whose sum is σ = 86750304. Its totient is φ = 72291900.

The previous prime is 79521089. The next prime is 79521109. The reversal of 79521101 is 10112597.

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.

It is a cyclic number.

It is not a de Polignac number, because 79521101 - 2²⁶ = 12412237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79521109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3614585 + ... + 3614606.

It is an arithmetic number, because the mean of its divisors is an integer number (21687576).

Almost surely, 2^79521101 is an apocalyptic number.

It is an amenable number.

79521101 is a deficient number, since it is larger than the sum of its proper divisors (7229203).

79521101 is a wasteful number, since it uses less digits than its factorization.

79521101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7229202.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 79521101 is about 8917.4604568790. The cubic root of 79521101 is about 430.0254194456.

Adding to 79521101 its reverse (10112597), we get a palindrome (89633698).

The spelling of 79521101 in words is "seventy-nine million, five hundred twenty-one thousand, one hundred one".