52563404021 has 2 divisors, whose sum is σ = 52563404022. Its totient is φ = 52563404020.

The previous prime is 52563403999. The next prime is 52563404059. The reversal of 52563404021 is 12040436525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49244491921 + 3318912100 = 221911^2 + 57610^2 .

It is a cyclic number.

It is not a de Polignac number, because 52563404021 - 2⁶ = 52563403957 is a prime.

It is a super-2 number, since 2×52563404021² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52563404321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26281702010 + 26281702011.

It is an arithmetic number, because the mean of its divisors is an integer number (26281702011).

Almost surely, 2^52563404021 is an apocalyptic number.

It is an amenable number.

52563404021 is a deficient number, since it is larger than the sum of its proper divisors (1).

52563404021 is an equidigital number, since it uses as much as digits as its factorization.

52563404021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 52563404021 in words is "fifty-two billion, five hundred sixty-three million, four hundred four thousand, twenty-one".