15412661 has 4 divisors (see below), whose sum is σ = 16813824. Its totient is φ = 14011500.

The previous prime is 15412627. The next prime is 15412669. The reversal of 15412661 is 16621451.

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 15412661 - 2¹⁰ = 15411637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15412661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15412669) 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, 700565 + ... + 700586.

It is an arithmetic number, because the mean of its divisors is an integer number (4203456).

Almost surely, 2^15412661 is an apocalyptic number.

15412661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15412661 is a deficient number, since it is larger than the sum of its proper divisors (1401163).

15412661 is a wasteful number, since it uses less digits than its factorization.

15412661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401162.

The product of its digits is 1440, while the sum is 26.

The square root of 15412661 is about 3925.8962034165. The cubic root of 15412661 is about 248.8623562528.

The spelling of 15412661 in words is "fifteen million, four hundred twelve thousand, six hundred sixty-one".