52251265540 has 24 divisors (see below), whose sum is σ = 110698703640. Its totient is φ = 20715545088.

The previous prime is 52251265537. The next prime is 52251265541. The reversal of 52251265540 is 4556215225.

It can be written as a sum of positive squares in 4 ways, for example, as 5256830016 + 46994435524 = 72504^2 + 216782^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 52251265540.

It is not an unprimeable number, because it can be changed into a prime (52251265541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11557755 + ... + 11562274.

It is an arithmetic number, because the mean of its divisors is an integer number (4612445985).

Almost surely, 2^52251265540 is an apocalyptic number.

It is an amenable number.

52251265540 is an abundant number, since it is smaller than the sum of its proper divisors (58447438100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52251265540 is a wasteful number, since it uses less digits than its factorization.

52251265540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23120151 (or 23120149 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 52251265540 in words is "fifty-two billion, two hundred fifty-one million, two hundred sixty-five thousand, five hundred forty".