52257288737 has 4 divisors (see below), whose sum is σ = 55331246916. Its totient is φ = 49183330560.

The previous prime is 52257288709. The next prime is 52257288739. The reversal of 52257288737 is 73788275225.

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 19577326561 + 32679962176 = 139919^2 + 180776^2 .

It is a cyclic number.

It is not a de Polignac number, because 52257288737 - 2¹⁸ = 52257026593 is a prime.

It is a super-2 number, since 2×52257288737² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52257288739) 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, 1536979064 + ... + 1536979097.

It is an arithmetic number, because the mean of its divisors is an integer number (13832811729).

Almost surely, 2^52257288737 is an apocalyptic number.

It is an amenable number.

52257288737 is a deficient number, since it is larger than the sum of its proper divisors (3073958179).

52257288737 is a wasteful number, since it uses less digits than its factorization.

52257288737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073958178.

The product of its digits is 13171200, while the sum is 56.

The spelling of 52257288737 in words is "fifty-two billion, two hundred fifty-seven million, two hundred eighty-eight thousand, seven hundred thirty-seven".