2055220 has 12 divisors (see below), whose sum is σ = 4316004. Its totient is φ = 822080.

The previous prime is 2055217. The next prime is 2055223. The reversal of 2055220 is 225502.

It is an interprime number because it is at equal distance from previous prime (2055217) and next prime (2055223).

It can be written as a sum of positive squares in 2 ways, for example, as 1542564 + 512656 = 1242^2 + 716^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2055194 and 2055203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2055223) 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, 51361 + ... + 51400.

It is an arithmetic number, because the mean of its divisors is an integer number (359667).

2^2055220 is an apocalyptic number.

2055220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2055220 is an abundant number, since it is smaller than the sum of its proper divisors (2260784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2055220 is a wasteful number, since it uses less digits than its factorization.

2055220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102770 (or 102768 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 2055220 is about 1433.6038504413. The cubic root of 2055220 is about 127.1411413671.

The spelling of 2055220 in words is "two million, fifty-five thousand, two hundred twenty".