15279791 has 2 divisors, whose sum is σ = 15279792. Its totient is φ = 15279790.

The previous prime is 15279769. The next prime is 15279799. The reversal of 15279791 is 19797251.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15279791 - 2⁶ = 15279727 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15279799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7639895 + 7639896.

It is an arithmetic number, because the mean of its divisors is an integer number (7639896).

Almost surely, 2^15279791 is an apocalyptic number.

15279791 is a deficient number, since it is larger than the sum of its proper divisors (1).

15279791 is an equidigital number, since it uses as much as digits as its factorization.

15279791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39690, while the sum is 41.

The square root of 15279791 is about 3908.9373236213. The cubic root of 15279791 is about 248.1451576066.

The spelling of 15279791 in words is "fifteen million, two hundred seventy-nine thousand, seven hundred ninety-one".