53843513 has 2 divisors, whose sum is σ = 53843514. Its totient is φ = 53843512.

The previous prime is 53843479. The next prime is 53843521. The reversal of 53843513 is 31534835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30880249 + 22963264 = 5557^2 + 4792^2 .

It is a cyclic number.

It is not a de Polignac number, because 53843513 - 2¹⁰ = 53842489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53843513.

It is not a weakly prime, because it can be changed into another prime (53843563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26921756 + 26921757.

It is an arithmetic number, because the mean of its divisors is an integer number (26921757).

Almost surely, 2^53843513 is an apocalyptic number.

It is an amenable number.

53843513 is a deficient number, since it is larger than the sum of its proper divisors (1).

53843513 is an equidigital number, since it uses as much as digits as its factorization.

53843513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 32.

The square root of 53843513 is about 7337.8139115134. The cubic root of 53843513 is about 377.6108482569.

The spelling of 53843513 in words is "fifty-three million, eight hundred forty-three thousand, five hundred thirteen".