53251260565 has 8 divisors (see below), whose sum is σ = 63998190648. Its totient is φ = 42536556480.

The previous prime is 53251260551. The next prime is 53251260593. The reversal of 53251260565 is 56506215235.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6291503761 + 46959756804 = 79319^2 + 216702^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53251260565 - 2¹⁹ = 53250736277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8052862 + ... + 8059471.

It is an arithmetic number, because the mean of its divisors is an integer number (7999773831).

Almost surely, 2^53251260565 is an apocalyptic number.

It is an amenable number.

53251260565 is a deficient number, since it is larger than the sum of its proper divisors (10746930083).

53251260565 is a wasteful number, since it uses less digits than its factorization.

53251260565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16112999.

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 53251260565 in words is "fifty-three billion, two hundred fifty-one million, two hundred sixty thousand, five hundred sixty-five".