15162161 has 4 divisors (see below), whose sum is σ = 17328192. Its totient is φ = 12996132.

The previous prime is 15162151. The next prime is 15162163. The reversal of 15162161 is 16126151.

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 15162161 - 2¹⁴ = 15145777 is a prime.

It is a super-2 number, since 2×15162161² = 459782252379842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15162163) 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, 1083005 + ... + 1083018.

It is an arithmetic number, because the mean of its divisors is an integer number (4332048).

Almost surely, 2^15162161 is an apocalyptic number.

It is an amenable number.

15162161 is a deficient number, since it is larger than the sum of its proper divisors (2166031).

15162161 is an equidigital number, since it uses as much as digits as its factorization.

15162161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166030.

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

The square root of 15162161 is about 3893.8619646824. The cubic root of 15162161 is about 247.5067426657.

The spelling of 15162161 in words is "fifteen million, one hundred sixty-two thousand, one hundred sixty-one".