53504024561 has 4 divisors (see below), whose sum is σ = 57619718772. Its totient is φ = 49388330352.

The previous prime is 53504024543. The next prime is 53504024573. The reversal of 53504024561 is 16542040535.

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 36588420961 + 16915603600 = 191281^2 + 130060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53504024561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53504023561) 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, 2057847086 + ... + 2057847111.

It is an arithmetic number, because the mean of its divisors is an integer number (14404929693).

Almost surely, 2^53504024561 is an apocalyptic number.

It is an amenable number.

53504024561 is a deficient number, since it is larger than the sum of its proper divisors (4115694211).

53504024561 is a wasteful number, since it uses less digits than its factorization.

53504024561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4115694210.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 53504024561 in words is "fifty-three billion, five hundred four million, twenty-four thousand, five hundred sixty-one".