11457161 has 6 divisors (see below), whose sum is σ = 11776590. Its totient is φ = 11146176.

The previous prime is 11457157. The next prime is 11457181. The reversal of 11457161 is 16175411.

It is a happy number.

11457161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 7728400 + 3728761 = 2780^2 + 1931^2 .

It is not a de Polignac number, because 11457161 - 2² = 11457157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11457161.

It is not an unprimeable number, because it can be changed into a prime (11457181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2816 + ... + 5553.

It is an arithmetic number, because the mean of its divisors is an integer number (1962765).

Almost surely, 2^11457161 is an apocalyptic number.

It is an amenable number.

11457161 is a deficient number, since it is larger than the sum of its proper divisors (319429).

11457161 is an frugal number, since it uses more digits than its factorization.

11457161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8443 (or 8406 counting only the distinct ones).

The product of its digits is 840, while the sum is 26.

The square root of 11457161 is about 3384.8428323927. The cubic root of 11457161 is about 225.4372468586.

It can be divided in two parts, 114 and 57161, that added together give a palindrome (57275).

The spelling of 11457161 in words is "eleven million, four hundred fifty-seven thousand, one hundred sixty-one".