2245421 has 8 divisors (see below), whose sum is σ = 2358720. Its totient is φ = 2133472.

The previous prime is 2245391. The next prime is 2245427. The reversal of 2245421 is 1245422.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2245421 - 2⁶ = 2245357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2245393 and 2245402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2245427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5150 + ... + 5568.

It is an arithmetic number, because the mean of its divisors is an integer number (294840).

2^2245421 is an apocalyptic number.

It is an amenable number.

2245421 is a deficient number, since it is larger than the sum of its proper divisors (113299).

2245421 is a wasteful number, since it uses less digits than its factorization.

2245421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675.

The product of its digits is 640, while the sum is 20.

The square root of 2245421 is about 1498.4728893110. The cubic root of 2245421 is about 130.9481176752.

Subtracting from 2245421 its reverse (1245422), we obtain a palindrome (999999).

The spelling of 2245421 in words is "two million, two hundred forty-five thousand, four hundred twenty-one".