2220549 has 16 divisors (see below), whose sum is σ = 3148800. Its totient is φ = 1388016.

The previous prime is 2220539. The next prime is 2220551. The reversal of 2220549 is 9450222.

It is not a de Polignac number, because 2220549 - 2⁸ = 2220293 is a prime.

It is a super-2 number, since 2×2220549² = 9861675722802, which contains 22 as substring.

2220549 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220529) 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, 9172 + ... + 9410.

It is an arithmetic number, because the mean of its divisors is an integer number (196800).

2^2220549 is an apocalyptic number.

It is an amenable number.

2220549 is a deficient number, since it is larger than the sum of its proper divisors (928251).

2220549 is a wasteful number, since it uses less digits than its factorization.

2220549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2220549 is about 1490.1506635237. The cubic root of 2220549 is about 130.4628275976.

The spelling of 2220549 in words is "two million, two hundred twenty thousand, five hundred forty-nine".