255477619 has 2 divisors, whose sum is σ = 255477620. Its totient is φ = 255477618.

The previous prime is 255477557. The next prime is 255477623. The reversal of 255477619 is 916774552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255477619 - 2²⁵ = 221923187 is a prime.

It is a super-2 number, since 2×255477619² = 130537627619818322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (255477689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127738809 + 127738810.

It is an arithmetic number, because the mean of its divisors is an integer number (127738810).

Almost surely, 2^255477619 is an apocalyptic number.

255477619 is a deficient number, since it is larger than the sum of its proper divisors (1).

255477619 is an equidigital number, since it uses as much as digits as its factorization.

255477619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 529200, while the sum is 46.

The square root of 255477619 is about 15983.6672575476. The cubic root of 255477619 is about 634.5282370286.

The spelling of 255477619 in words is "two hundred fifty-five million, four hundred seventy-seven thousand, six hundred nineteen".