11055220 has 48 divisors (see below), whose sum is σ = 26159616. Its totient is φ = 3888000.

The previous prime is 11055211. The next prime is 11055229. The reversal of 11055220 is 2255011.

It is an interprime number because it is at equal distance from previous prime (11055211) and next prime (11055229).

It is a junction number, because it is equal to n+sod(n) for n = 11055194 and 11055203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11055229) 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, 6010 + ... + 7630.

It is an arithmetic number, because the mean of its divisors is an integer number (544992).

Almost surely, 2^11055220 is an apocalyptic number.

11055220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11055220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13079808).

11055220 is an abundant number, since it is smaller than the sum of its proper divisors (15104396).

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

11055220 is a wasteful number, since it uses less digits than its factorization.

11055220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672 (or 1670 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 11055220 is about 3324.9390971866. The cubic root of 11055220 is about 222.7695340654.

The spelling of 11055220 in words is "eleven million, fifty-five thousand, two hundred twenty".