79042251 has 4 divisors (see below), whose sum is σ = 105389672. Its totient is φ = 52694832.

The previous prime is 79042247. The next prime is 79042259. The reversal of 79042251 is 15224097.

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

It is not a de Polignac number, because 79042251 - 2² = 79042247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79042259) 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, 13173706 + ... + 13173711.

It is an arithmetic number, because the mean of its divisors is an integer number (26347418).

Almost surely, 2^79042251 is an apocalyptic number.

79042251 is a deficient number, since it is larger than the sum of its proper divisors (26347421).

79042251 is a wasteful number, since it uses less digits than its factorization.

79042251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26347420.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 79042251 is about 8890.5709040533. The cubic root of 79042251 is about 429.1605237105.

The spelling of 79042251 in words is "seventy-nine million, forty-two thousand, two hundred fifty-one".