255042251 has 4 divisors (see below), whose sum is σ = 255158400. Its totient is φ = 254926104.

The previous prime is 255042247. The next prime is 255042253. The reversal of 255042251 is 152240552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255042251 - 2² = 255042247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255042251.

It is not an unprimeable number, because it can be changed into a prime (255042253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54716 + ... + 59193.

It is an arithmetic number, because the mean of its divisors is an integer number (63789600).

Almost surely, 2^255042251 is an apocalyptic number.

255042251 is a deficient number, since it is larger than the sum of its proper divisors (116149).

255042251 is a wasteful number, since it uses less digits than its factorization.

255042251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116148.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 255042251 is about 15970.0422980028. The cubic root of 255042251 is about 634.1675917877.

The spelling of 255042251 in words is "two hundred fifty-five million, forty-two thousand, two hundred fifty-one".