255623417 has 8 divisors (see below), whose sum is σ = 300037056. Its totient is φ = 213183792.

The previous prime is 255623413. The next prime is 255623447. The reversal of 255623417 is 714326552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255623417 - 2² = 255623413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255623413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493223 + ... + 493740.

It is an arithmetic number, because the mean of its divisors is an integer number (37504632).

Almost surely, 2^255623417 is an apocalyptic number.

It is an amenable number.

255623417 is a deficient number, since it is larger than the sum of its proper divisors (44413639).

255623417 is an equidigital number, since it uses as much as digits as its factorization.

255623417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987007.

The product of its digits is 50400, while the sum is 35.

The square root of 255623417 is about 15988.2274502210. The cubic root of 255623417 is about 634.6489199482.

Adding to 255623417 its reverse (714326552), we get a palindrome (969949969).

The spelling of 255623417 in words is "two hundred fifty-five million, six hundred twenty-three thousand, four hundred seventeen".