52505585917487 has 2 divisors, whose sum is σ = 52505585917488. Its totient is φ = 52505585917486.

The previous prime is 52505585917471. The next prime is 52505585917493. The reversal of 52505585917487 is 78471958550525.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52505585917487 - 2⁴ = 52505585917471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52505585917487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52505585917987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26252792958743 + 26252792958744.

It is an arithmetic number, because the mean of its divisors is an integer number (26252792958744).

Almost surely, 2^{52505585917487} is an apocalyptic number.

52505585917487 is a deficient number, since it is larger than the sum of its proper divisors (1).

52505585917487 is an equidigital number, since it uses as much as digits as its factorization.

52505585917487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600000, while the sum is 71.

The spelling of 52505585917487 in words is "fifty-two trillion, five hundred five billion, five hundred eighty-five million, nine hundred seventeen thousand, four hundred eighty-seven".