256264033 has 4 divisors (see below), whose sum is σ = 256300740. Its totient is φ = 256227328.

The previous prime is 256264031. The next prime is 256264061. The reversal of 256264033 is 330462652.

It is a happy number.

256264033 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70023424 + 186240609 = 8368^2 + 13647^2 .

It is a cyclic number.

It is not a de Polignac number, because 256264033 - 2¹ = 256264031 is a prime.

It is a super-3 number, since 3×256264033³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256263986 and 256264004.

It is not an unprimeable number, because it can be changed into a prime (256264031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4288 + ... + 23041.

It is an arithmetic number, because the mean of its divisors is an integer number (64075185).

Almost surely, 2^256264033 is an apocalyptic number.

It is an amenable number.

256264033 is a deficient number, since it is larger than the sum of its proper divisors (36707).

256264033 is an equidigital number, since it uses as much as digits as its factorization.

256264033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36706.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 256264033 is about 16008.2489048615. The cubic root of 256264033 is about 635.1786407101.

The spelling of 256264033 in words is "two hundred fifty-six million, two hundred sixty-four thousand, thirty-three".