252976755565 has 4 divisors (see below), whose sum is σ = 303572106684. Its totient is φ = 202381404448.

The previous prime is 252976755553. The next prime is 252976755569. The reversal of 252976755565 is 565557679252.

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 124734699684 + 128242055881 = 353178^2 + 358109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252976755565 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252976755497 and 252976755506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252976755569) 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, 25297675552 + ... + 25297675561.

It is an arithmetic number, because the mean of its divisors is an integer number (75893026671).

Almost surely, 2^252976755565 is an apocalyptic number.

It is an amenable number.

252976755565 is a deficient number, since it is larger than the sum of its proper divisors (50595351119).

252976755565 is an equidigital number, since it uses as much as digits as its factorization.

252976755565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50595351118.

The product of its digits is 198450000, while the sum is 64.

The spelling of 252976755565 in words is "two hundred fifty-two billion, nine hundred seventy-six million, seven hundred fifty-five thousand, five hundred sixty-five".