52491540243 has 24 divisors (see below), whose sum is σ = 71149600368. Its totient is φ = 34422454528.

The previous prime is 52491540163. The next prime is 52491540253. The reversal of 52491540243 is 34204519425.

It is not a de Polignac number, because 52491540243 - 2²⁶ = 52424431379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52491540253) 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 in 23 ways as a sum of consecutive naturals, for example, 4675705 + ... + 4686917.

It is an arithmetic number, because the mean of its divisors is an integer number (2964566682).

Almost surely, 2^52491540243 is an apocalyptic number.

52491540243 is a deficient number, since it is larger than the sum of its proper divisors (18658060125).

52491540243 is a wasteful number, since it uses less digits than its factorization.

52491540243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11591 (or 11502 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 52491540243 in words is "fifty-two billion, four hundred ninety-one million, five hundred forty thousand, two hundred forty-three".