255549913 has 8 divisors (see below), whose sum is σ = 257519808. Its totient is φ = 253585584.

The previous prime is 255549869. The next prime is 255549991. The reversal of 255549913 is 319945552.

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 255549913 - 2⁹ = 255549401 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 255549913.

It is not an unprimeable number, because it can be changed into a prime (255540913) 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 7 ways as a sum of consecutive naturals, for example, 146595 + ... + 148327.

It is an arithmetic number, because the mean of its divisors is an integer number (32189976).

Almost surely, 2^255549913 is an apocalyptic number.

It is an amenable number.

255549913 is a deficient number, since it is larger than the sum of its proper divisors (1969895).

255549913 is a wasteful number, since it uses less digits than its factorization.

255549913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783.

The product of its digits is 243000, while the sum is 43.

The square root of 255549913 is about 15985.9285936101. The cubic root of 255549913 is about 634.5880834427.

The spelling of 255549913 in words is "two hundred fifty-five million, five hundred forty-nine thousand, nine hundred thirteen".