2245671 has 16 divisors (see below), whose sum is σ = 3435520. Its totient is φ = 1448280.

The previous prime is 2245657. The next prime is 2245679. The reversal of 2245671 is 1765422.

2245671 = 254² + 255² + ... + 284².

It is not a de Polignac number, because 2245671 - 2⁷ = 2245543 is a prime.

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

It is a Duffinian number.

2245671 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2245679) 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, 505 + ... + 2178.

It is an arithmetic number, because the mean of its divisors is an integer number (214720).

2^2245671 is an apocalyptic number.

2245671 is a deficient number, since it is larger than the sum of its proper divisors (1189849).

2245671 is a wasteful number, since it uses less digits than its factorization.

2245671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723 (or 2717 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 2245671 is about 1498.5563052485. The cubic root of 2245671 is about 130.9529773154.

Subtracting from 2245671 its reverse (1765422), we obtain a square (480249 = 693²).

It can be divided in two parts, 2245 and 671, that added together give a square (2916 = 54²).

The spelling of 2245671 in words is "two million, two hundred forty-five thousand, six hundred seventy-one".