53591513 has 2 divisors, whose sum is σ = 53591514. Its totient is φ = 53591512.

The previous prime is 53591501. The next prime is 53591537. The reversal of 53591513 is 31519535.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28270489 + 25321024 = 5317^2 + 5032^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53591513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53591513.

It is not a weakly prime, because it can be changed into another prime (53591113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26795756 + 26795757.

It is an arithmetic number, because the mean of its divisors is an integer number (26795757).

Almost surely, 2^53591513 is an apocalyptic number.

It is an amenable number.

53591513 is a deficient number, since it is larger than the sum of its proper divisors (1).

53591513 is an equidigital number, since it uses as much as digits as its factorization.

53591513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10125, while the sum is 32.

The square root of 53591513 is about 7320.6224462132. The cubic root of 53591513 is about 377.0208250005.

The spelling of 53591513 in words is "fifty-three million, five hundred ninety-one thousand, five hundred thirteen".