15112661 has 4 divisors (see below), whose sum is σ = 15134400. Its totient is φ = 15090924.

The previous prime is 15112639. The next prime is 15112667. The reversal of 15112661 is 16621151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15112661 - 2⁶ = 15112597 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 (15112667) 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, 9791 + ... + 11228.

It is an arithmetic number, because the mean of its divisors is an integer number (3783600).

Almost surely, 2^15112661 is an apocalyptic number.

It is an amenable number.

15112661 is a deficient number, since it is larger than the sum of its proper divisors (21739).

15112661 is an equidigital number, since it uses as much as digits as its factorization.

15112661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21738.

The product of its digits is 360, while the sum is 23.

The square root of 15112661 is about 3887.5006109324. The cubic root of 15112661 is about 247.2371034279.

The spelling of 15112661 in words is "fifteen million, one hundred twelve thousand, six hundred sixty-one".