255649511 has 10 divisors (see below), whose sum is σ = 276983832. Its totient is φ = 235957800.

The previous prime is 255649481. The next prime is 255649517. The reversal of 255649511 is 115946552.

It is not a de Polignac number, because 255649511 - 2⁶ = 255649447 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 (255649517) 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 9 ways as a sum of consecutive naturals, for example, 24086 + ... + 33036.

Almost surely, 2^255649511 is an apocalyptic number.

255649511 is a deficient number, since it is larger than the sum of its proper divisors (21334321).

255649511 is an frugal number, since it uses more digits than its factorization.

255649511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9003 (or 8964 counting only the distinct ones).

The product of its digits is 54000, while the sum is 38.

The square root of 255649511 is about 15989.0434673247. The cubic root of 255649511 is about 634.6705141689.

The spelling of 255649511 in words is "two hundred fifty-five million, six hundred forty-nine thousand, five hundred eleven".