15421161 has 16 divisors (see below), whose sum is σ = 23721984. Its totient is φ = 8728464.

The previous prime is 15421139. The next prime is 15421163. The reversal of 15421161 is 16112451.

It is not a de Polignac number, because 15421161 - 2⁷ = 15421033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (15421163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1185 + ... + 5678.

It is an arithmetic number, because the mean of its divisors is an integer number (1482624).

Almost surely, 2^15421161 is an apocalyptic number.

It is an amenable number.

15421161 is a deficient number, since it is larger than the sum of its proper divisors (8300823).

15421161 is a wasteful number, since it uses less digits than its factorization.

15421161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6980.

The product of its digits is 240, while the sum is 21.

The square root of 15421161 is about 3926.9786095674. The cubic root of 15421161 is about 248.9080965976.

The spelling of 15421161 in words is "fifteen million, four hundred twenty-one thousand, one hundred sixty-one".