255220451 has 4 divisors (see below), whose sum is σ = 257083512. Its totient is φ = 253357392.

The previous prime is 255220447. The next prime is 255220457. The reversal of 255220451 is 154022552.

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 255220451 - 2² = 255220447 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 255220451.

It is not an unprimeable number, because it can be changed into a prime (255220457) 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 3 ways as a sum of consecutive naturals, for example, 931325 + ... + 931598.

It is an arithmetic number, because the mean of its divisors is an integer number (64270878).

Almost surely, 2^255220451 is an apocalyptic number.

255220451 is a deficient number, since it is larger than the sum of its proper divisors (1863061).

255220451 is a wasteful number, since it uses less digits than its factorization.

255220451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863060.

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

The square root of 255220451 is about 15975.6205200299. The cubic root of 255220451 is about 634.3152566741.

The spelling of 255220451 in words is "two hundred fifty-five million, two hundred twenty thousand, four hundred fifty-one".