256241093 has 4 divisors (see below), whose sum is σ = 256447500. Its totient is φ = 256034688.

The previous prime is 256241077. The next prime is 256241107. The reversal of 256241093 is 390142652.

It is a happy number.

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 171269569 + 84971524 = 13087^2 + 9218^2 .

It is a cyclic number.

It is not a de Polignac number, because 256241093 - 2⁴ = 256241077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256247093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101330 + ... + 103827.

It is an arithmetic number, because the mean of its divisors is an integer number (64111875).

Almost surely, 2^256241093 is an apocalyptic number.

It is an amenable number.

256241093 is a deficient number, since it is larger than the sum of its proper divisors (206407).

256241093 is a wasteful number, since it uses less digits than its factorization.

256241093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206406.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 256241093 is about 16007.5323832251. The cubic root of 256241093 is about 635.1596870387.

The spelling of 256241093 in words is "two hundred fifty-six million, two hundred forty-one thousand, ninety-three".