53815313 has 2 divisors, whose sum is σ = 53815314. Its totient is φ = 53815312.

The previous prime is 53815297. The next prime is 53815367. The reversal of 53815313 is 31351835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33085504 + 20729809 = 5752^2 + 4553^2 .

It is a cyclic number.

It is not a de Polignac number, because 53815313 - 2⁴ = 53815297 is a prime.

It is not a weakly prime, because it can be changed into another prime (53815393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26907656 + 26907657.

It is an arithmetic number, because the mean of its divisors is an integer number (26907657).

Almost surely, 2^53815313 is an apocalyptic number.

It is an amenable number.

53815313 is a deficient number, since it is larger than the sum of its proper divisors (1).

53815313 is an equidigital number, since it uses as much as digits as its factorization.

53815313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 29.

The square root of 53815313 is about 7335.8921066221. The cubic root of 53815313 is about 377.5449134463.

It can be divided in two parts, 538 and 15313, that added together give a palindrome (15851).

The spelling of 53815313 in words is "fifty-three million, eight hundred fifteen thousand, three hundred thirteen".