255550251 has 16 divisors (see below), whose sum is σ = 372273408. Its totient is φ = 154644000.

The previous prime is 255550223. The next prime is 255550303. The reversal of 255550251 is 152055552.

It is not a de Polignac number, because 255550251 - 2⁵ = 255550219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255550051) 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 in 15 ways as a sum of consecutive naturals, for example, 17610 + ... + 28656.

It is an arithmetic number, because the mean of its divisors is an integer number (23267088).

Almost surely, 2^255550251 is an apocalyptic number.

255550251 is a deficient number, since it is larger than the sum of its proper divisors (116723157).

255550251 is a wasteful number, since it uses less digits than its factorization.

255550251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11762.

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 255550251 is about 15985.9391654041. The cubic root of 255550251 is about 634.5883632193.

The spelling of 255550251 in words is "two hundred fifty-five million, five hundred fifty thousand, two hundred fifty-one".