255040251 has 16 divisors (see below), whose sum is σ = 344213280. Its totient is φ = 167955200.

The previous prime is 255040243. The next prime is 255040259. The reversal of 255040251 is 152040552.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (255040243) and next prime (255040259).

It is a cyclic number.

It is not a de Polignac number, because 255040251 - 2³ = 255040243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255040259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197215 + ... + 198503.

It is an arithmetic number, because the mean of its divisors is an integer number (21513330).

Almost surely, 2^255040251 is an apocalyptic number.

255040251 is a deficient number, since it is larger than the sum of its proper divisors (89173029).

255040251 is a wasteful number, since it uses less digits than its factorization.

255040251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 255040251 is about 15969.9796806383. The cubic root of 255040251 is about 634.1659341035.

The spelling of 255040251 in words is "two hundred fifty-five million, forty thousand, two hundred fifty-one".