915161 has 16 divisors (see below), whose sum is σ = 1079568. Its totient is φ = 768000.

The previous prime is 915157. The next prime is 915181. The reversal of 915161 is 161519.

It can be written as a sum of positive squares in 8 ways, for example, as 1225 + 913936 = 35^2 + 956^2 .

It is a cyclic number.

It is not a de Polignac number, because 915161 - 2² = 915157 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 915161.

It is not an unprimeable number, because it can be changed into a prime (915181) 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, 9011 + ... + 9111.

It is an arithmetic number, because the mean of its divisors is an integer number (67473).

2⁹¹⁵¹⁶¹ is an apocalyptic number.

It is an amenable number.

915161 is a deficient number, since it is larger than the sum of its proper divisors (164407).

915161 is a wasteful number, since it uses less digits than its factorization.

915161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172.

The product of its digits is 270, while the sum is 23.

The square root of 915161 is about 956.6404758320. The cubic root of 915161 is about 97.0880625857.

The spelling of 915161 in words is "nine hundred fifteen thousand, one hundred sixty-one".