256530552 has 64 divisors (see below), whose sum is σ = 677107200. Its totient is φ = 80766720.

The previous prime is 256530529. The next prime is 256530581. The reversal of 256530552 is 255035652.

256530552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207777 + ... + 209007.

It is an arithmetic number, because the mean of its divisors is an integer number (10579800).

Almost surely, 2^256530552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256530552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338553600).

256530552 is an abundant number, since it is smaller than the sum of its proper divisors (420576648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256530552 is a wasteful number, since it uses less digits than its factorization.

256530552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716 (or 1712 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 33.

The square root of 256530552 is about 16016.5711686366. The cubic root of 256530552 is about 635.3987633194.

The spelling of 256530552 in words is "two hundred fifty-six million, five hundred thirty thousand, five hundred fifty-two".