2256719 has 4 divisors (see below), whose sum is σ = 2265144. Its totient is φ = 2248296.

The previous prime is 2256713. The next prime is 2256721. The reversal of 2256719 is 9176522.

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 2256719 - 2⁴ = 2256703 is a prime.

It is a super-2 number, since 2×2256719² = 10185561289922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3797 + ... + 4350.

It is an arithmetic number, because the mean of its divisors is an integer number (566286).

2^2256719 is an apocalyptic number.

2256719 is a deficient number, since it is larger than the sum of its proper divisors (8425).

2256719 is an equidigital number, since it uses as much as digits as its factorization.

2256719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8424.

The product of its digits is 7560, while the sum is 32.

The square root of 2256719 is about 1502.2379971230. The cubic root of 2256719 is about 131.1673753590.

The spelling of 2256719 in words is "two million, two hundred fifty-six thousand, seven hundred nineteen".