52240132397857 has 4 divisors (see below), whose sum is σ = 52242197168916. Its totient is φ = 52238067626800.

The previous prime is 52240132397801. The next prime is 52240132397863. The reversal of 52240132397857 is 75879323104225.

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 44948965951201 + 7291166446656 = 6704399^2 + 2700216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52240132397857 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52240132397357) 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, 1032347578 + ... + 1032398179.

It is an arithmetic number, because the mean of its divisors is an integer number (13060549292229).

Almost surely, 2^{52240132397857} is an apocalyptic number.

It is an amenable number.

52240132397857 is a deficient number, since it is larger than the sum of its proper divisors (2064771059).

52240132397857 is a wasteful number, since it uses less digits than its factorization.

52240132397857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064771058.

The product of its (nonzero) digits is 25401600, while the sum is 58.

The spelling of 52240132397857 in words is "fifty-two trillion, two hundred forty billion, one hundred thirty-two million, three hundred ninety-seven thousand, eight hundred fifty-seven".