2255445 has 20 divisors (see below), whose sum is σ = 4043820. Its totient is φ = 1202688.

The previous prime is 2255437. The next prime is 2255447. The reversal of 2255445 is 5445522.

It can be written as a sum of positive squares in 2 ways, for example, as 599076 + 1656369 = 774^2 + 1287^2 .

It is not a de Polignac number, because 2255445 - 2³ = 2255437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255447) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2380 + ... + 3189.

It is an arithmetic number, because the mean of its divisors is an integer number (202191).

2^2255445 is an apocalyptic number.

It is an amenable number.

2255445 is a deficient number, since it is larger than the sum of its proper divisors (1788375).

2255445 is an equidigital number, since it uses as much as digits as its factorization.

2255445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5586 (or 5577 counting only the distinct ones).

The product of its digits is 8000, while the sum is 27.

The square root of 2255445 is about 1501.8139032517. The cubic root of 2255445 is about 131.1426877939.

The spelling of 2255445 in words is "two million, two hundred fifty-five thousand, four hundred forty-five".