15799591 has 2 divisors, whose sum is σ = 15799592. Its totient is φ = 15799590.

The previous prime is 15799561. The next prime is 15799627. The reversal of 15799591 is 19599751.

15799591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15799591 - 2¹⁵ = 15766823 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 (15799501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7899795 + 7899796.

It is an arithmetic number, because the mean of its divisors is an integer number (7899796).

Almost surely, 2^15799591 is an apocalyptic number.

15799591 is a deficient number, since it is larger than the sum of its proper divisors (1).

15799591 is an equidigital number, since it uses as much as digits as its factorization.

15799591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127575, while the sum is 46.

The square root of 15799591 is about 3974.8699349790. The cubic root of 15799591 is about 250.9277051941.

The spelling of 15799591 in words is "fifteen million, seven hundred ninety-nine thousand, five hundred ninety-one".