255520801 has 2 divisors, whose sum is σ = 255520802. Its totient is φ = 255520800.

The previous prime is 255520757. The next prime is 255520807. The reversal of 255520801 is 108025552.

255520801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255520225 + 576 = 15985^2 + 24^2 .

It is a cyclic number.

It is not a de Polignac number, because 255520801 - 2²⁵ = 221966369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255520801.

It is not a weakly prime, because it can be changed into another prime (255520807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127760400 + 127760401.

It is an arithmetic number, because the mean of its divisors is an integer number (127760401).

Almost surely, 2^255520801 is an apocalyptic number.

It is an amenable number.

255520801 is a deficient number, since it is larger than the sum of its proper divisors (1).

255520801 is an equidigital number, since it uses as much as digits as its factorization.

255520801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 255520801 is about 15985.0180168807. The cubic root of 255520801 is about 634.5639853065.

The spelling of 255520801 in words is "two hundred fifty-five million, five hundred twenty thousand, eight hundred one".