56220005 has 8 divisors (see below), whose sum is σ = 67957272. Its totient is φ = 44647168.

The previous prime is 56219987. The next prime is 56220007. The reversal of 56220005 is 50002265.

It is a happy number.

It is a Cunningham number, because it is equal to 7498²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 56220004 = 1^2 + 7498^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56220005 - 2⁶ = 56219941 is a prime.

It is a Duffinian number.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40352 + ... + 41721.

It is an arithmetic number, because the mean of its divisors is an integer number (8494659).

Almost surely, 2^56220005 is an apocalyptic number.

It is an amenable number.

56220005 is a deficient number, since it is larger than the sum of its proper divisors (11737267).

56220005 is a wasteful number, since it uses less digits than its factorization.

56220005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82215.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 56220005 is about 7498.0000666844. Note that the first 4 decimals coincide. The cubic root of 56220005 is about 383.0865990464.

The spelling of 56220005 in words is "fifty-six million, two hundred twenty thousand, five".