79242551 has 4 divisors (see below), whose sum is σ = 79327704. Its totient is φ = 79157400.

The previous prime is 79242503. The next prime is 79242563. The reversal of 79242551 is 15524297.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79242551 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79247551) 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, 41165 + ... + 43046.

It is an arithmetic number, because the mean of its divisors is an integer number (19831926).

Almost surely, 2^79242551 is an apocalyptic number.

79242551 is a deficient number, since it is larger than the sum of its proper divisors (85153).

79242551 is an equidigital number, since it uses as much as digits as its factorization.

79242551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85152.

The product of its digits is 25200, while the sum is 35.

The square root of 79242551 is about 8901.8285200289. The cubic root of 79242551 is about 429.5227280720.

The spelling of 79242551 in words is "seventy-nine million, two hundred forty-two thousand, five hundred fifty-one".