53161643 has 2 divisors, whose sum is σ = 53161644. Its totient is φ = 53161642.

The previous prime is 53161609. The next prime is 53161649. The reversal of 53161643 is 34616135.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53161643 - 2¹⁸ = 52899499 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53161649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26580821 + 26580822.

It is an arithmetic number, because the mean of its divisors is an integer number (26580822).

Almost surely, 2^53161643 is an apocalyptic number.

53161643 is a deficient number, since it is larger than the sum of its proper divisors (1).

53161643 is an equidigital number, since it uses as much as digits as its factorization.

53161643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 29.

The square root of 53161643 is about 7291.2031243136. The cubic root of 53161643 is about 376.0100603729.

Adding to 53161643 its reverse (34616135), we get a palindrome (87777778).

The spelling of 53161643 in words is "fifty-three million, one hundred sixty-one thousand, six hundred forty-three".