2256415 has 16 divisors (see below), whose sum is σ = 3230208. Its totient is φ = 1479456.

The previous prime is 2256413. The next prime is 2256431. The reversal of 2256415 is 5146522.

It is a cyclic number.

It is not a de Polignac number, because 2256415 - 2¹ = 2256413 is a prime.

It is a Duffinian number.

2256415 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2256415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256413) 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, 597 + ... + 2206.

It is an arithmetic number, because the mean of its divisors is an integer number (201888).

2^2256415 is an apocalyptic number.

2256415 is a deficient number, since it is larger than the sum of its proper divisors (973793).

2256415 is a wasteful number, since it uses less digits than its factorization.

2256415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838.

The product of its digits is 2400, while the sum is 25.

The square root of 2256415 is about 1502.1368113458. The cubic root of 2256415 is about 131.1614852928.

The spelling of 2256415 in words is "two million, two hundred fifty-six thousand, four hundred fifteen".