53161243 has 2 divisors, whose sum is σ = 53161244. Its totient is φ = 53161242.

The previous prime is 53161231. The next prime is 53161247. The reversal of 53161243 is 34216135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53161243 - 2¹⁷ = 53030171 is a prime.

It is a super-2 number, since 2×53161243² = 5652235514610098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53161247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26580621 + 26580622.

It is an arithmetic number, because the mean of its divisors is an integer number (26580622).

Almost surely, 2^53161243 is an apocalyptic number.

53161243 is a deficient number, since it is larger than the sum of its proper divisors (1).

53161243 is an equidigital number, since it uses as much as digits as its factorization.

53161243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 53161243 is about 7291.1756939468. The cubic root of 53161243 is about 376.0091173095.

Adding to 53161243 its reverse (34216135), we get a palindrome (87377378).

The spelling of 53161243 in words is "fifty-three million, one hundred sixty-one thousand, two hundred forty-three".