15915161 has 4 divisors (see below), whose sum is σ = 15944292. Its totient is φ = 15886032.

The previous prime is 15915131. The next prime is 15915169. The reversal of 15915161 is 16151951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16151951 = 1231 ⋅13121.

It can be written as a sum of positive squares in 2 ways, for example, as 462400 + 15452761 = 680^2 + 3931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15915161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15915169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13730 + ... + 14843.

It is an arithmetic number, because the mean of its divisors is an integer number (3986073).

Almost surely, 2^15915161 is an apocalyptic number.

It is an amenable number.

15915161 is a deficient number, since it is larger than the sum of its proper divisors (29131).

15915161 is an equidigital number, since it uses as much as digits as its factorization.

15915161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29130.

The product of its digits is 1350, while the sum is 29.

The square root of 15915161 is about 3989.3810296837. The cubic root of 15915161 is about 251.5380436161.

The spelling of 15915161 in words is "fifteen million, nine hundred fifteen thousand, one hundred sixty-one".