255111506 has 8 divisors (see below), whose sum is σ = 412103244. Its totient is φ = 117743760.

The previous prime is 255111497. The next prime is 255111517. The reversal of 255111506 is 605111552.

255111506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 181306225 + 73805281 = 13465^2 + 8591^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 9811981 = 255111506 / (2 + 5 + 5 + 1 + 1 + 1 + 5 + 0 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4905965 + ... + 4906016.

Almost surely, 2^255111506 is an apocalyptic number.

255111506 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

255111506 is a deficient number, since it is larger than the sum of its proper divisors (156991738).

255111506 is a wasteful number, since it uses less digits than its factorization.

255111506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9811996.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 255111506 is about 15972.2104293676. The cubic root of 255111506 is about 634.2249879010.

The spelling of 255111506 in words is "two hundred fifty-five million, one hundred eleven thousand, five hundred six".