15612961 has 8 divisors (see below), whose sum is σ = 19216064. Its totient is φ = 12353040.

The previous prime is 15612959. The next prime is 15612967. The reversal of 15612961 is 16921651.

15612961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15612961 - 2¹ = 15612959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15612967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85695 + ... + 85876.

It is an arithmetic number, because the mean of its divisors is an integer number (2402008).

Almost surely, 2^15612961 is an apocalyptic number.

It is an amenable number.

15612961 is a deficient number, since it is larger than the sum of its proper divisors (3603103).

15612961 is a wasteful number, since it uses less digits than its factorization.

15612961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171591.

The product of its digits is 3240, while the sum is 31.

The square root of 15612961 is about 3951.3239553345. The cubic root of 15612961 is about 249.9357755023.

The spelling of 15612961 in words is "fifteen million, six hundred twelve thousand, nine hundred sixty-one".