53391313 has 2 divisors, whose sum is σ = 53391314. Its totient is φ = 53391312.

The previous prime is 53391263. The next prime is 53391323. The reversal of 53391313 is 31319335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51667344 + 1723969 = 7188^2 + 1313^2 .

It is a cyclic number.

It is not a de Polignac number, because 53391313 - 2⁹ = 53390801 is a prime.

It is equal to p_3192058 and since 53391313 and 3192058 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (53391323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26695656 + 26695657.

It is an arithmetic number, because the mean of its divisors is an integer number (26695657).

Almost surely, 2^53391313 is an apocalyptic number.

It is an amenable number.

53391313 is a deficient number, since it is larger than the sum of its proper divisors (1).

53391313 is an equidigital number, since it uses as much as digits as its factorization.

53391313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3645, while the sum is 28.

The square root of 53391313 is about 7306.9359515463. The cubic root of 53391313 is about 376.5507645419.

It can be divided in two parts, 5339 and 1313, that multiplied together give a palindrome (7010107).

The spelling of 53391313 in words is "fifty-three million, three hundred ninety-one thousand, three hundred thirteen".