53161331 has 2 divisors, whose sum is σ = 53161332. Its totient is φ = 53161330.

The previous prime is 53161327. The next prime is 53161369. The reversal of 53161331 is 13316135.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53161331 - 2² = 53161327 is a prime.

It is a super-2 number, since 2×53161331² = 5652254227383122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 53161297 and 53161306.

It is not a weakly prime, because it can be changed into another prime (53161231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26580665 + 26580666.

It is an arithmetic number, because the mean of its divisors is an integer number (26580666).

Almost surely, 2^53161331 is an apocalyptic number.

53161331 is a deficient number, since it is larger than the sum of its proper divisors (1).

53161331 is an equidigital number, since it uses as much as digits as its factorization.

53161331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 810, while the sum is 23.

The square root of 53161331 is about 7291.1817286363. The cubic root of 53161331 is about 376.0093247838.

Adding to 53161331 its reverse (13316135), we get a palindrome (66477466).

The spelling of 53161331 in words is "fifty-three million, one hundred sixty-one thousand, three hundred thirty-one".