53165531 has 2 divisors, whose sum is σ = 53165532. Its totient is φ = 53165530.

The previous prime is 53165509. The next prime is 53165533. The reversal of 53165531 is 13556135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53165531 - 2¹⁸ = 52903387 is a prime.

It is a super-2 number, since 2×53165531² = 5653147373023922, which contains 22 as substring.

Together with 53165533, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 53165494 and 53165503.

It is not a weakly prime, because it can be changed into another prime (53165533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26582765 + 26582766.

It is an arithmetic number, because the mean of its divisors is an integer number (26582766).

Almost surely, 2^53165531 is an apocalyptic number.

53165531 is a deficient number, since it is larger than the sum of its proper divisors (1).

53165531 is an equidigital number, since it uses as much as digits as its factorization.

53165531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6750, while the sum is 29.

The square root of 53165531 is about 7291.4697421028. The cubic root of 53165531 is about 376.0192267028.

The spelling of 53165531 in words is "fifty-three million, one hundred sixty-five thousand, five hundred thirty-one".