79481251 has 2 divisors, whose sum is σ = 79481252. Its totient is φ = 79481250.

The previous prime is 79481249. The next prime is 79481267. The reversal of 79481251 is 15218497.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79481251 - 2¹ = 79481249 is a prime.

Together with 79481249, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79481251.

It is not a weakly prime, because it can be changed into another prime (79481651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39740625 + 39740626.

It is an arithmetic number, because the mean of its divisors is an integer number (39740626).

Almost surely, 2^79481251 is an apocalyptic number.

79481251 is a deficient number, since it is larger than the sum of its proper divisors (1).

79481251 is an equidigital number, since it uses as much as digits as its factorization.

79481251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 37.

The square root of 79481251 is about 8915.2257963554. The cubic root of 79481251 is about 429.9535753016.

The spelling of 79481251 in words is "seventy-nine million, four hundred eighty-one thousand, two hundred fifty-one".