53161 has 2 divisors, whose sum is σ = 53162. Its totient is φ = 53160.

The previous prime is 53149. The next prime is 53171. The reversal of 53161 is 16135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48400 + 4761 = 220^2 + 69^2 .

It is a cyclic number.

It is not a de Polignac number, because 53161 - 2⁵ = 53129 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26580 + 26581.

It is an arithmetic number, because the mean of its divisors is an integer number (26581).

2⁵³¹⁶¹ is an apocalyptic number.

It is an amenable number.

53161 is a deficient number, since it is larger than the sum of its proper divisors (1).

53161 is an equidigital number, since it uses as much as digits as its factorization.

53161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90, while the sum is 16.

The square root of 53161 is about 230.5666931714. The cubic root of 53161 is about 37.6008544396.

Adding to 53161 its reverse (16135), we get a palindrome (69296).

The spelling of 53161 in words is "fifty-three thousand, one hundred sixty-one".