255829477 has 2 divisors, whose sum is σ = 255829478. Its totient is φ = 255829476.

The previous prime is 255829429. The next prime is 255829493. The reversal of 255829477 is 774928552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253414561 + 2414916 = 15919^2 + 1554^2 .

It is a cyclic number.

It is not a de Polignac number, because 255829477 - 2¹⁹ = 255305189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255829477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255829177) 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, 127914738 + 127914739.

It is an arithmetic number, because the mean of its divisors is an integer number (127914739).

Almost surely, 2^255829477 is an apocalyptic number.

It is an amenable number.

255829477 is a deficient number, since it is larger than the sum of its proper divisors (1).

255829477 is an equidigital number, since it uses as much as digits as its factorization.

255829477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1411200, while the sum is 49.

The square root of 255829477 is about 15994.6702685613. The cubic root of 255829477 is about 634.8194059361.

The spelling of 255829477 in words is "two hundred fifty-five million, eight hundred twenty-nine thousand, four hundred seventy-seven".