53012513 has 2 divisors, whose sum is σ = 53012514. Its totient is φ = 53012512.

The previous prime is 53012501. The next prime is 53012521. The reversal of 53012513 is 31521035.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49801249 + 3211264 = 7057^2 + 1792^2 .

It is a cyclic number.

It is not a de Polignac number, because 53012513 - 2⁸ = 53012257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (53011513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26506256 + 26506257.

It is an arithmetic number, because the mean of its divisors is an integer number (26506257).

Almost surely, 2^53012513 is an apocalyptic number.

It is an amenable number.

53012513 is a deficient number, since it is larger than the sum of its proper divisors (1).

53012513 is an equidigital number, since it uses as much as digits as its factorization.

53012513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 53012513 is about 7280.9692349302. The cubic root of 53012513 is about 375.6581343561.

Adding to 53012513 its reverse (31521035), we get a palindrome (84533548).

The spelling of 53012513 in words is "fifty-three million, twelve thousand, five hundred thirteen".