11465161 has 4 divisors (see below), whose sum is σ = 11622292. Its totient is φ = 11308032.

The previous prime is 11465159. The next prime is 11465171. The reversal of 11465161 is 16156411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16156411 = 563 ⋅28697.

It can be written as a sum of positive squares in 2 ways, for example, as 5089536 + 6375625 = 2256^2 + 2525^2 .

It is a cyclic number.

It is not a de Polignac number, because 11465161 - 2¹ = 11465159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11465101) 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, 78456 + ... + 78601.

It is an arithmetic number, because the mean of its divisors is an integer number (2905573).

Almost surely, 2^11465161 is an apocalyptic number.

It is an amenable number.

11465161 is a deficient number, since it is larger than the sum of its proper divisors (157131).

11465161 is an equidigital number, since it uses as much as digits as its factorization.

11465161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157130.

The product of its digits is 720, while the sum is 25.

The square root of 11465161 is about 3386.0243649448. The cubic root of 11465161 is about 225.4897054148.

The spelling of 11465161 in words is "eleven million, four hundred sixty-five thousand, one hundred sixty-one".