256022201 has 4 divisors (see below), whose sum is σ = 256250100. Its totient is φ = 255794304.

The previous prime is 256022183. The next prime is 256022213. The reversal of 256022201 is 102220652.

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 20430400 + 235591801 = 4520^2 + 15349^2 .

It is a cyclic number.

It is not a de Polignac number, because 256022201 - 2¹⁰ = 256021177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256022801) 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, 112256 + ... + 114513.

It is an arithmetic number, because the mean of its divisors is an integer number (64062525).

Almost surely, 2^256022201 is an apocalyptic number.

It is an amenable number.

256022201 is a deficient number, since it is larger than the sum of its proper divisors (227899).

256022201 is a wasteful number, since it uses less digits than its factorization.

256022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227898.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 256022201 is about 16000.6937662090. The cubic root of 256022201 is about 634.9787754081.

Adding to 256022201 its reverse (102220652), we get a palindrome (358242853).

The spelling of 256022201 in words is "two hundred fifty-six million, twenty-two thousand, two hundred one".