256450111 has 4 divisors (see below), whose sum is σ = 256508512. Its totient is φ = 256391712.

The previous prime is 256450109. The next prime is 256450123. The reversal of 256450111 is 111054652.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256450111 - 2¹ = 256450109 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 (256457111) 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, 22026 + ... + 31591.

It is an arithmetic number, because the mean of its divisors is an integer number (64127128).

Almost surely, 2^256450111 is an apocalyptic number.

256450111 is a deficient number, since it is larger than the sum of its proper divisors (58401).

256450111 is an equidigital number, since it uses as much as digits as its factorization.

256450111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58400.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 256450111 is about 16014.0597913209. The cubic root of 256450111 is about 635.3323417893.

The spelling of 256450111 in words is "two hundred fifty-six million, four hundred fifty thousand, one hundred eleven".