2256397 has 16 divisors (see below), whose sum is σ = 2741760. Its totient is φ = 1828800.

The previous prime is 2256389. The next prime is 2256413. The reversal of 2256397 is 7936522.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2256397 - 2³ = 2256389 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 (2256347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4179 + ... + 4687.

It is an arithmetic number, because the mean of its divisors is an integer number (171360).

2^2256397 is an apocalyptic number.

It is an amenable number.

2256397 is a deficient number, since it is larger than the sum of its proper divisors (485363).

2256397 is a wasteful number, since it uses less digits than its factorization.

2256397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564.

The product of its digits is 22680, while the sum is 34.

The square root of 2256397 is about 1502.1308198689. The cubic root of 2256397 is about 131.1611365223.

The spelling of 2256397 in words is "two million, two hundred fifty-six thousand, three hundred ninety-seven".