2220955 has 12 divisors (see below), whose sum is σ = 2930256. Its totient is φ = 1614800.

The previous prime is 2220941. The next prime is 2220961. The reversal of 2220955 is 5590222.

2220955 = 84² + 85² + ... + 193².

It is not a de Polignac number, because 2220955 - 2⁵ = 2220923 is a prime.

It is a super-2 number, since 2×2220955² = 9865282224050, which contains 22 as substring.

It is a Duffinian number.

2220955 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1231 + ... + 2440.

It is an arithmetic number, because the mean of its divisors is an integer number (244188).

2^2220955 is an apocalyptic number.

2220955 is a deficient number, since it is larger than the sum of its proper divisors (709301).

2220955 is a wasteful number, since it uses less digits than its factorization.

2220955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3698 (or 3687 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2220955 is about 1490.2868851332. The cubic root of 2220955 is about 130.4707782861.

The spelling of 2220955 in words is "two million, two hundred twenty thousand, nine hundred fifty-five".