255405223 has 4 divisors (see below), whose sum is σ = 256163440. Its totient is φ = 254647008.

The previous prime is 255405211. The next prime is 255405253. The reversal of 255405223 is 322504552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255405223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255405191 and 255405200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255405253) 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, 378603 + ... + 379276.

It is an arithmetic number, because the mean of its divisors is an integer number (64040860).

Almost surely, 2^255405223 is an apocalyptic number.

255405223 is a deficient number, since it is larger than the sum of its proper divisors (758217).

255405223 is an equidigital number, since it uses as much as digits as its factorization.

255405223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758216.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 255405223 is about 15981.4024103018. The cubic root of 255405223 is about 634.4682948619.

Adding to 255405223 its reverse (322504552), we get a palindrome (577909775).

The spelling of 255405223 in words is "two hundred fifty-five million, four hundred five thousand, two hundred twenty-three".