2256915 has 16 divisors (see below), whose sum is σ = 3801600. Its totient is φ = 1140192.

The previous prime is 2256913. The next prime is 2256923. The reversal of 2256915 is 5196522.

It is a happy number.

It is not a de Polignac number, because 2256915 - 2¹ = 2256913 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256911) 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, 3675 + ... + 4244.

It is an arithmetic number, because the mean of its divisors is an integer number (237600).

2^2256915 is an apocalyptic number.

2256915 is a deficient number, since it is larger than the sum of its proper divisors (1544685).

2256915 is a wasteful number, since it uses less digits than its factorization.

2256915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7946.

The product of its digits is 5400, while the sum is 30.

The square root of 2256915 is about 1502.3032317079. The cubic root of 2256915 is about 131.1711726212.

It can be divided in two parts, 225 and 6915, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 2256915 in words is "two million, two hundred fifty-six thousand, nine hundred fifteen".