255515249 has 8 divisors (see below), whose sum is σ = 293414880. Its totient is φ = 220060800.

The previous prime is 255515231. The next prime is 255515263. The reversal of 255515249 is 942515552.

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 255515249 - 2¹² = 255511153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255512249) 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, 611072 + ... + 611489.

It is an arithmetic number, because the mean of its divisors is an integer number (36676860).

Almost surely, 2^255515249 is an apocalyptic number.

It is an amenable number.

255515249 is a deficient number, since it is larger than the sum of its proper divisors (37899631).

255515249 is a wasteful number, since it uses less digits than its factorization.

255515249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222591.

The product of its digits is 90000, while the sum is 38.

The square root of 255515249 is about 15984.8443533242. The cubic root of 255515249 is about 634.5593893013.

The spelling of 255515249 in words is "two hundred fifty-five million, five hundred fifteen thousand, two hundred forty-nine".