255305423 has 4 divisors (see below), whose sum is σ = 255460608. Its totient is φ = 255150240.

The previous prime is 255305417. The next prime is 255305431. The reversal of 255305423 is 324503552.

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-255305423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255305123) 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 3 ways as a sum of consecutive naturals, for example, 75098 + ... + 78423.

It is an arithmetic number, because the mean of its divisors is an integer number (63865152).

Almost surely, 2^255305423 is an apocalyptic number.

255305423 is a deficient number, since it is larger than the sum of its proper divisors (155185).

255305423 is a wasteful number, since it uses less digits than its factorization.

255305423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155184.

The product of its (nonzero) digits is 18000, while the sum is 29.

The square root of 255305423 is about 15978.2797259279. The cubic root of 255305423 is about 634.3856442615.

Adding to 255305423 its reverse (324503552), we get a palindrome (579808975).

The spelling of 255305423 in words is "two hundred fifty-five million, three hundred five thousand, four hundred twenty-three".