255623377 has 2 divisors, whose sum is σ = 255623378. Its totient is φ = 255623376.

The previous prime is 255623369. The next prime is 255623383. The reversal of 255623377 is 773326552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244891201 + 10732176 = 15649^2 + 3276^2 .

It is a cyclic number.

It is not a de Polignac number, because 255623377 - 2³ = 255623369 is a prime.

It is a super-3 number, since 3×255623377³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (255623327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127811688 + 127811689.

It is an arithmetic number, because the mean of its divisors is an integer number (127811689).

Almost surely, 2^255623377 is an apocalyptic number.

It is an amenable number.

255623377 is a deficient number, since it is larger than the sum of its proper divisors (1).

255623377 is an equidigital number, since it uses as much as digits as its factorization.

255623377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 40.

The square root of 255623377 is about 15988.2261993005. The cubic root of 255623377 is about 634.6488868448.

The spelling of 255623377 in words is "two hundred fifty-five million, six hundred twenty-three thousand, three hundred seventy-seven".