53365531 has 2 divisors, whose sum is σ = 53365532. Its totient is φ = 53365530.

The previous prime is 53365513. The next prime is 53365573. The reversal of 53365531 is 13556335.

It is a happy number.

Together with previous prime (53365513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53365531 is a prime.

It is a super-2 number, since 2×53365531² = 5695759797823922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53365493 and 53365502.

It is not a weakly prime, because it can be changed into another prime (53365511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26682765 + 26682766.

It is an arithmetic number, because the mean of its divisors is an integer number (26682766).

Almost surely, 2^53365531 is an apocalyptic number.

53365531 is a deficient number, since it is larger than the sum of its proper divisors (1).

53365531 is an equidigital number, since it uses as much as digits as its factorization.

53365531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20250, while the sum is 31.

The square root of 53365531 is about 7305.1715243381. The cubic root of 53365531 is about 376.4901442253.

The spelling of 53365531 in words is "fifty-three million, three hundred sixty-five thousand, five hundred thirty-one".