255261583 has 2 divisors, whose sum is σ = 255261584. Its totient is φ = 255261582.

The previous prime is 255261581. The next prime is 255261641. The reversal of 255261583 is 385162552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255261583 - 2¹ = 255261581 is a prime.

Together with 255261581, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255261581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127630791 + 127630792.

It is an arithmetic number, because the mean of its divisors is an integer number (127630792).

Almost surely, 2^255261583 is an apocalyptic number.

255261583 is a deficient number, since it is larger than the sum of its proper divisors (1).

255261583 is an equidigital number, since it uses as much as digits as its factorization.

255261583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 37.

The square root of 255261583 is about 15976.9078047036. The cubic root of 255261583 is about 634.3493308160.

The spelling of 255261583 in words is "two hundred fifty-five million, two hundred sixty-one thousand, five hundred eighty-three".