2221773 has 4 divisors (see below), whose sum is σ = 2962368. Its totient is φ = 1481180.

The previous prime is 2221771. The next prime is 2221789. The reversal of 2221773 is 3771222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2221773 - 2¹ = 2221771 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370293 + ... + 370298.

It is an arithmetic number, because the mean of its divisors is an integer number (740592).

2^2221773 is an apocalyptic number.

It is an amenable number.

2221773 is a deficient number, since it is larger than the sum of its proper divisors (740595).

2221773 is an equidigital number, since it uses as much as digits as its factorization.

2221773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740594.

The product of its digits is 1176, while the sum is 24.

The square root of 2221773 is about 1490.5613036705. The cubic root of 2221773 is about 130.4867942187.

Adding to 2221773 its reverse (3771222), we get a palindrome (5992995).

The spelling of 2221773 in words is "two million, two hundred twenty-one thousand, seven hundred seventy-three".