255582749 has 4 divisors (see below), whose sum is σ = 259914720. Its totient is φ = 251250780.

The previous prime is 255582731. The next prime is 255582763. The reversal of 255582749 is 947285552.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255582749 - 2²⁰ = 254534173 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 (255582779) 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, 2165897 + ... + 2166014.

It is an arithmetic number, because the mean of its divisors is an integer number (64978680).

Almost surely, 2^255582749 is an apocalyptic number.

It is an amenable number.

255582749 is a deficient number, since it is larger than the sum of its proper divisors (4331971).

255582749 is an equidigital number, since it uses as much as digits as its factorization.

255582749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4331970.

The product of its digits is 1008000, while the sum is 47.

The square root of 255582749 is about 15986.9555888543. The cubic root of 255582749 is about 634.6152620105.

The spelling of 255582749 in words is "two hundred fifty-five million, five hundred eighty-two thousand, seven hundred forty-nine".