256550233 has 4 divisors (see below), whose sum is σ = 256724020. Its totient is φ = 256376448.

The previous prime is 256550227. The next prime is 256550279. The reversal of 256550233 is 332055652.

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 15586704 + 240963529 = 3948^2 + 15523^2 .

It is a cyclic number.

It is not a de Polignac number, because 256550233 - 2⁹ = 256549721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256550195 and 256550204.

It is not an unprimeable number, because it can be changed into a prime (256553233) 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, 84660 + ... + 87637.

It is an arithmetic number, because the mean of its divisors is an integer number (64181005).

Almost surely, 2^256550233 is an apocalyptic number.

It is an amenable number.

256550233 is a deficient number, since it is larger than the sum of its proper divisors (173787).

256550233 is a wasteful number, since it uses less digits than its factorization.

256550233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173786.

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 256550233 is about 16017.1855517753. The cubic root of 256550233 is about 635.4150121485.

The spelling of 256550233 in words is "two hundred fifty-six million, five hundred fifty thousand, two hundred thirty-three".