52505802989 has 4 divisors (see below), whose sum is σ = 52507428540. Its totient is φ = 52504177440.

The previous prime is 52505802983. The next prime is 52505802991. The reversal of 52505802989 is 98920850525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25101649225 + 27404153764 = 158435^2 + 165542^2 .

It is a cyclic number.

It is not a de Polignac number, because 52505802989 - 2²⁴ = 52489025773 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52505802989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52505802983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763322 + ... + 829259.

It is an arithmetic number, because the mean of its divisors is an integer number (13126857135).

Almost surely, 2^52505802989 is an apocalyptic number.

It is an amenable number.

52505802989 is a deficient number, since it is larger than the sum of its proper divisors (1625551).

52505802989 is a wasteful number, since it uses less digits than its factorization.

52505802989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625550.

The product of its (nonzero) digits is 2592000, while the sum is 53.

The spelling of 52505802989 in words is "fifty-two billion, five hundred five million, eight hundred two thousand, nine hundred eighty-nine".