15315091 has 12 divisors (see below), whose sum is σ = 17198496. Its totient is φ = 13621520.

The previous prime is 15315089. The next prime is 15315101. The reversal of 15315091 is 19051351.

15315091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15315091 - 2¹ = 15315089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15315071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4341 + ... + 7033.

It is an arithmetic number, because the mean of its divisors is an integer number (1433208).

Almost surely, 2^15315091 is an apocalyptic number.

15315091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15315091 is a deficient number, since it is larger than the sum of its proper divisors (1883405).

15315091 is a wasteful number, since it uses less digits than its factorization.

15315091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762 (or 2751 counting only the distinct ones).

The product of its (nonzero) digits is 675, while the sum is 25.

The square root of 15315091 is about 3913.4500124570. The cubic root of 15315091 is about 248.3361023469.

The spelling of 15315091 in words is "fifteen million, three hundred fifteen thousand, ninety-one".