53365513 has 2 divisors, whose sum is σ = 53365514. Its totient is φ = 53365512.

The previous prime is 53365511. The next prime is 53365531. The reversal of 53365513 is 31556335.

It is a happy number.

Together with next prime (53365531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52012944 + 1352569 = 7212^2 + 1163^2 .

It is a cyclic number.

It is not a de Polignac number, because 53365513 - 2¹ = 53365511 is a prime.

Together with 53365511, it forms a pair of twin primes.

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, 26682756 + 26682757.

It is an arithmetic number, because the mean of its divisors is an integer number (26682757).

Almost surely, 2^53365513 is an apocalyptic number.

It is an amenable number.

53365513 is a deficient number, since it is larger than the sum of its proper divisors (1).

53365513 is an equidigital number, since it uses as much as digits as its factorization.

53365513 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 53365513 is about 7305.1702923341. The cubic root of 53365513 is about 376.4901018957.

The spelling of 53365513 in words is "fifty-three million, three hundred sixty-five thousand, five hundred thirteen".