2277945 has 24 divisors (see below), whose sum is σ = 3983616. Its totient is φ = 1204128.

The previous prime is 2277941. The next prime is 2278007. The reversal of 2277945 is 5497722.

It is not a de Polignac number, because 2277945 - 2² = 2277941 is a prime.

It is a Curzon number.

2277945 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2277941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9922 + ... + 10148.

It is an arithmetic number, because the mean of its divisors is an integer number (165984).

2^2277945 is an apocalyptic number.

It is an amenable number.

2277945 is a deficient number, since it is larger than the sum of its proper divisors (1705671).

2277945 is a wasteful number, since it uses less digits than its factorization.

2277945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 458 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 2277945 is about 1509.2862551551. The cubic root of 2277945 is about 131.5773326258.

The spelling of 2277945 in words is "two million, two hundred seventy-seven thousand, nine hundred forty-five".