52578152491 has 2 divisors, whose sum is σ = 52578152492. Its totient is φ = 52578152490.

The previous prime is 52578152447. The next prime is 52578152567. The reversal of 52578152491 is 19425187525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52578152491 - 2¹⁵ = 52578119723 is a prime.

It is not a weakly prime, because it can be changed into another prime (52578152441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26289076245 + 26289076246.

It is an arithmetic number, because the mean of its divisors is an integer number (26289076246).

Almost surely, 2^52578152491 is an apocalyptic number.

52578152491 is a deficient number, since it is larger than the sum of its proper divisors (1).

52578152491 is an equidigital number, since it uses as much as digits as its factorization.

52578152491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008000, while the sum is 49.

The spelling of 52578152491 in words is "fifty-two billion, five hundred seventy-eight million, one hundred fifty-two thousand, four hundred ninety-one".