52020514991 has 2 divisors, whose sum is σ = 52020514992. Its totient is φ = 52020514990.

The previous prime is 52020514963. The next prime is 52020515023. The reversal of 52020514991 is 19941502025.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52020514991 is a prime.

It is a super-2 number, since 2×52020514991² (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 (52020514921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26010257495 + 26010257496.

It is an arithmetic number, because the mean of its divisors is an integer number (26010257496).

Almost surely, 2^52020514991 is an apocalyptic number.

52020514991 is a deficient number, since it is larger than the sum of its proper divisors (1).

52020514991 is an equidigital number, since it uses as much as digits as its factorization.

52020514991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 52020514991 in words is "fifty-two billion, twenty million, five hundred fourteen thousand, nine hundred ninety-one".