256111413 has 16 divisors (see below), whose sum is σ = 353673216. Its totient is φ = 164748080.

The previous prime is 256111411. The next prime is 256111433. The reversal of 256111413 is 314111652.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 256111413 - 2¹ = 256111411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256111411) 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 15 ways as a sum of consecutive naturals, for example, 2781 + ... + 22802.

It is an arithmetic number, because the mean of its divisors is an integer number (22104576).

Almost surely, 2^256111413 is an apocalyptic number.

It is an amenable number.

256111413 is a deficient number, since it is larger than the sum of its proper divisors (97561803).

256111413 is a wasteful number, since it uses less digits than its factorization.

256111413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25704.

The product of its digits is 720, while the sum is 24.

The square root of 256111413 is about 16003.4812775221. The cubic root of 256111413 is about 635.0525205077.

The spelling of 256111413 in words is "two hundred fifty-six million, one hundred eleven thousand, four hundred thirteen".