255242751 has 16 divisors (see below), whose sum is σ = 358736640. Its totient is φ = 160980480.

The previous prime is 255242749. The next prime is 255242783. The reversal of 255242751 is 157242552.

It is not a de Polignac number, because 255242751 - 2¹ = 255242749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255242051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44191 + ... + 49631.

It is an arithmetic number, because the mean of its divisors is an integer number (22421040).

Almost surely, 2^255242751 is an apocalyptic number.

255242751 is a deficient number, since it is larger than the sum of its proper divisors (103493889).

255242751 is a wasteful number, since it uses less digits than its factorization.

255242751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6286.

The product of its digits is 28000, while the sum is 33.

The square root of 255242751 is about 15976.3184432459. The cubic root of 255242751 is about 634.3337306616. Note that the first 3 decimals are identical.

The spelling of 255242751 in words is "two hundred fifty-five million, two hundred forty-two thousand, seven hundred fifty-one".