251560055653 has 2 divisors, whose sum is σ = 251560055654. Its totient is φ = 251560055652.

The previous prime is 251560055641. The next prime is 251560055687. The reversal of 251560055653 is 356550065152.

251560055653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210821477409 + 40738578244 = 459153^2 + 201838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251560055653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251560055693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125780027826 + 125780027827.

It is an arithmetic number, because the mean of its divisors is an integer number (125780027827).

Almost surely, 2^251560055653 is an apocalyptic number.

It is an amenable number.

251560055653 is a deficient number, since it is larger than the sum of its proper divisors (1).

251560055653 is an equidigital number, since it uses as much as digits as its factorization.

251560055653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 675000, while the sum is 43.

The spelling of 251560055653 in words is "two hundred fifty-one billion, five hundred sixty million, fifty-five thousand, six hundred fifty-three".