15314891 has 4 divisors (see below), whose sum is σ = 15322800. Its totient is φ = 15306984.

The previous prime is 15314863. The next prime is 15314921. The reversal of 15314891 is 19841351.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15314891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15314801) 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, 1130 + ... + 5648.

It is an arithmetic number, because the mean of its divisors is an integer number (3830700).

Almost surely, 2^15314891 is an apocalyptic number.

15314891 is a deficient number, since it is larger than the sum of its proper divisors (7909).

15314891 is an equidigital number, since it uses as much as digits as its factorization.

15314891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7908.

The product of its digits is 4320, while the sum is 32.

The square root of 15314891 is about 3913.4244594728. The cubic root of 15314891 is about 248.3350213339.

The spelling of 15314891 in words is "fifteen million, three hundred fourteen thousand, eight hundred ninety-one".