53205613 has 2 divisors, whose sum is σ = 53205614. Its totient is φ = 53205612.

The previous prime is 53205611. The next prime is 53205617. The reversal of 53205613 is 31650235.

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., 50509449 + 2696164 = 7107^2 + 1642^2 .

It is a cyclic number.

It is not a de Polignac number, because 53205613 - 2¹ = 53205611 is a prime.

Together with 53205611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53205611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26602806 + 26602807.

It is an arithmetic number, because the mean of its divisors is an integer number (26602807).

Almost surely, 2^53205613 is an apocalyptic number.

It is an amenable number.

53205613 is a deficient number, since it is larger than the sum of its proper divisors (1).

53205613 is an equidigital number, since it uses as much as digits as its factorization.

53205613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 53205613 is about 7294.2177784873. The cubic root of 53205613 is about 376.1136977909.

Adding to 53205613 its reverse (31650235), we get a palindrome (84855848).

The spelling of 53205613 in words is "fifty-three million, two hundred five thousand, six hundred thirteen".