52505065806523 has 32 divisors (see below), whose sum is σ = 58433295697920. Its totient is φ = 46771674243840.

The previous prime is 52505065806517. The next prime is 52505065806539. The reversal of 52505065806523 is 32560856050525.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52505065806523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52505065806623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1610420340 + ... + 1610452942.

It is an arithmetic number, because the mean of its divisors is an integer number (1826040490560).

Almost surely, 2^{52505065806523} is an apocalyptic number.

52505065806523 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

52505065806523 is a deficient number, since it is larger than the sum of its proper divisors (5928229891397).

52505065806523 is a wasteful number, since it uses less digits than its factorization.

52505065806523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36099.

The product of its (nonzero) digits is 10800000, while the sum is 52.

The spelling of 52505065806523 in words is "fifty-two trillion, five hundred five billion, sixty-five million, eight hundred six thousand, five hundred twenty-three".