52405544602991 has 2 divisors, whose sum is σ = 52405544602992. Its totient is φ = 52405544602990.

The previous prime is 52405544602907. The next prime is 52405544603029. The reversal of 52405544602991 is 19920644550425.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52405544602991 - 2¹⁸ = 52405544340847 is a prime.

It is a super-2 number, since 2×52405544602991² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52405544607991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26202772301495 + 26202772301496.

It is an arithmetic number, because the mean of its divisors is an integer number (26202772301496).

Almost surely, 2^{52405544602991} is an apocalyptic number.

52405544602991 is a deficient number, since it is larger than the sum of its proper divisors (1).

52405544602991 is an equidigital number, since it uses as much as digits as its factorization.

52405544602991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552000, while the sum is 56.

The spelling of 52405544602991 in words is "fifty-two trillion, four hundred five billion, five hundred forty-four million, six hundred two thousand, nine hundred ninety-one".