255550775 has 24 divisors (see below), whose sum is σ = 323979264. Its totient is φ = 199916000.

The previous prime is 255550759. The next prime is 255550781. The reversal of 255550775 is 577055552.

It is not a de Polignac number, because 255550775 - 2⁴ = 255550759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221450 + ... + 222600.

It is an arithmetic number, because the mean of its divisors is an integer number (13499136).

Almost surely, 2^255550775 is an apocalyptic number.

255550775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

255550775 is a deficient number, since it is larger than the sum of its proper divisors (68428489).

255550775 is a wasteful number, since it uses less digits than its factorization.

255550775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351 (or 1346 counting only the distinct ones).

The product of its (nonzero) digits is 306250, while the sum is 41.

The square root of 255550775 is about 15985.9555547987. The cubic root of 255550775 is about 634.5887969554.

The spelling of 255550775 in words is "two hundred fifty-five million, five hundred fifty thousand, seven hundred seventy-five".