53368813 has 2 divisors, whose sum is σ = 53368814. Its totient is φ = 53368812.

The previous prime is 53368807. The next prime is 53368817. The reversal of 53368813 is 31886335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49519369 + 3849444 = 7037^2 + 1962^2 .

It is a cyclic number.

It is not a de Polignac number, because 53368813 - 2⁵ = 53368781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53368817) 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, 26684406 + 26684407.

It is an arithmetic number, because the mean of its divisors is an integer number (26684407).

Almost surely, 2^53368813 is an apocalyptic number.

It is an amenable number.

53368813 is a deficient number, since it is larger than the sum of its proper divisors (1).

53368813 is an equidigital number, since it uses as much as digits as its factorization.

53368813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 53368813 is about 7305.3961562670. The cubic root of 53368813 is about 376.4978621617.

The spelling of 53368813 in words is "fifty-three million, three hundred sixty-eight thousand, eight hundred thirteen".