256522 has 16 divisors (see below), whose sum is σ = 447552. Its totient is φ = 108000.

The previous prime is 256517. The next prime is 256541. The reversal of 256522 is 225652.

256522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2⁵ + 5³ + 5⁷ + 6⁶ + 2⁹ + 2¹⁷ .

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 256493 and 256502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 897 + ... + 1147.

It is an arithmetic number, because the mean of its divisors is an integer number (27972).

2²⁵⁶⁵²² is an apocalyptic number.

256522 is a deficient number, since it is larger than the sum of its proper divisors (191030).

256522 is a wasteful number, since it uses less digits than its factorization.

256522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333.

The product of its digits is 1200, while the sum is 22.

The square root of 256522 is about 506.4800094772. The cubic root of 256522 is about 63.5391702444.

The spelling of 256522 in words is "two hundred fifty-six thousand, five hundred twenty-two".