79216451 has 2 divisors, whose sum is σ = 79216452. Its totient is φ = 79216450.

The previous prime is 79216441. The next prime is 79216457. The reversal of 79216451 is 15461297.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79216451 is a prime.

It is a super-2 number, since 2×79216451² = 12550492218070802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79216457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39608225 + 39608226.

It is an arithmetic number, because the mean of its divisors is an integer number (39608226).

Almost surely, 2^79216451 is an apocalyptic number.

79216451 is a deficient number, since it is larger than the sum of its proper divisors (1).

79216451 is an equidigital number, since it uses as much as digits as its factorization.

79216451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 35.

The square root of 79216451 is about 8900.3624083517. The cubic root of 79216451 is about 429.4755658085.

The spelling of 79216451 in words is "seventy-nine million, two hundred sixteen thousand, four hundred fifty-one".