15491159 has 4 divisors (see below), whose sum is σ = 15505560. Its totient is φ = 15476760.

The previous prime is 15491149. The next prime is 15491171. The reversal of 15491159 is 95119451.

15491159 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15491159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15491129) 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, 5444 + ... + 7785.

It is an arithmetic number, because the mean of its divisors is an integer number (3876390).

Almost surely, 2^15491159 is an apocalyptic number.

15491159 is a deficient number, since it is larger than the sum of its proper divisors (14401).

15491159 is a wasteful number, since it uses less digits than its factorization.

15491159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14400.

The product of its digits is 8100, while the sum is 35.

The square root of 15491159 is about 3935.8809687286. The cubic root of 15491159 is about 249.2841334301.

The spelling of 15491159 in words is "fifteen million, four hundred ninety-one thousand, one hundred fifty-nine".