256011 has 16 divisors (see below), whose sum is σ = 397824. Its totient is φ = 143424.

The previous prime is 255989. The next prime is 256019. The reversal of 256011 is 110652.

256011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256011 - 2⁶ = 255947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1450 + ... + 1616.

It is an arithmetic number, because the mean of its divisors is an integer number (24864).

2²⁵⁶⁰¹¹ is an apocalyptic number.

256011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

256011 is a deficient number, since it is larger than the sum of its proper divisors (141813).

256011 is a wasteful number, since it uses less digits than its factorization.

256011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 256011 is about 505.9752958396. The cubic root of 256011 is about 63.4969515142.

Adding to 256011 its reverse (110652), we get a palindrome (366663).

The spelling of 256011 in words is "two hundred fifty-six thousand, eleven".