52604440621 has 2 divisors, whose sum is σ = 52604440622. Its totient is φ = 52604440620.

The previous prime is 52604440597. The next prime is 52604440657. The reversal of 52604440621 is 12604440625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50742518121 + 1861922500 = 225261^2 + 43150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52604440621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52604440321) 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, 26302220310 + 26302220311.

It is an arithmetic number, because the mean of its divisors is an integer number (26302220311).

Almost surely, 2^52604440621 is an apocalyptic number.

It is an amenable number.

52604440621 is a deficient number, since it is larger than the sum of its proper divisors (1).

52604440621 is an equidigital number, since it uses as much as digits as its factorization.

52604440621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 34.

It can be divided in two parts, 526044 and 40621, that added together give a palindrome (566665).

The spelling of 52604440621 in words is "fifty-two billion, six hundred four million, four hundred forty thousand, six hundred twenty-one".