79581101 has 4 divisors (see below), whose sum is σ = 83769600. Its totient is φ = 75392604.

The previous prime is 79581083. The next prime is 79581107. The reversal of 79581101 is 10118597.

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 79581101 - 2¹⁴ = 79564717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79581107) 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, 2094221 + ... + 2094258.

It is an arithmetic number, because the mean of its divisors is an integer number (20942400).

Almost surely, 2^79581101 is an apocalyptic number.

It is an amenable number.

79581101 is a deficient number, since it is larger than the sum of its proper divisors (4188499).

79581101 is a wasteful number, since it uses less digits than its factorization.

79581101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4188498.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 79581101 is about 8920.8240090252. The cubic root of 79581101 is about 430.1335460448.

Adding to 79581101 its reverse (10118597), we get a palindrome (89699698).

The spelling of 79581101 in words is "seventy-nine million, five hundred eighty-one thousand, one hundred one".