256122301 has 4 divisors (see below), whose sum is σ = 256231900. Its totient is φ = 256012704.

The previous prime is 256122283. The next prime is 256122311. The reversal of 256122301 is 103221652.

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 17388900 + 238733401 = 4170^2 + 15451^2 .

It is a cyclic number.

It is not a de Polignac number, because 256122301 - 2²⁵ = 222567869 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 (256122311) 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, 51216 + ... + 55993.

It is an arithmetic number, because the mean of its divisors is an integer number (64057975).

Almost surely, 2^256122301 is an apocalyptic number.

It is an amenable number.

256122301 is a deficient number, since it is larger than the sum of its proper divisors (109599).

256122301 is a wasteful number, since it uses less digits than its factorization.

256122301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109598.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 256122301 is about 16003.8214498913. The cubic root of 256122301 is about 635.0615196561.

Adding to 256122301 its reverse (103221652), we get a palindrome (359343953).

The spelling of 256122301 in words is "two hundred fifty-six million, one hundred twenty-two thousand, three hundred one".