56220000 has 120 divisors (see below), whose sum is σ = 184609656. Its totient is φ = 14976000.

The previous prime is 56219987. The next prime is 56220007. The reversal of 56220000 is 2265.

56220000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56220007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 59532 + ... + 60468.

Almost surely, 2^56220000 is an apocalyptic number.

56220000 is a gapful number since it is divisible by the number (50) 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 56220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92304828).

56220000 is an abundant number, since it is smaller than the sum of its proper divisors (128389656).

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

56220000 is an equidigital number, since it uses as much as digits as its factorization.

56220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970 (or 947 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 56220000 is about 7497.9997332622. Note that the first 3 decimals coincide. The cubic root of 56220000 is about 383.0865876896.

Adding to 56220000 its reverse (2265), we get a palindrome (56222265).

The spelling of 56220000 in words is "fifty-six million, two hundred twenty thousand".