255477053717 has 2 divisors, whose sum is σ = 255477053718. Its totient is φ = 255477053716.

The previous prime is 255477053603. The next prime is 255477053743. The reversal of 255477053717 is 717350774552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241086892036 + 14390161681 = 491006^2 + 119959^2 .

It is a cyclic number.

It is not a de Polignac number, because 255477053717 - 2³⁶ = 186757576981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255477053417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127738526858 + 127738526859.

It is an arithmetic number, because the mean of its divisors is an integer number (127738526859).

Almost surely, 2^255477053717 is an apocalyptic number.

It is an amenable number.

255477053717 is a deficient number, since it is larger than the sum of its proper divisors (1).

255477053717 is an equidigital number, since it uses as much as digits as its factorization.

255477053717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7203000, while the sum is 53.

The spelling of 255477053717 in words is "two hundred fifty-five billion, four hundred seventy-seven million, fifty-three thousand, seven hundred seventeen".