56221205 has 4 divisors (see below), whose sum is σ = 67465452. Its totient is φ = 44976960.

The previous prime is 56221201. The next prime is 56221213. The reversal of 56221205 is 50212265.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38056561 + 18164644 = 6169^2 + 4262^2 .

It is not a de Polignac number, because 56221205 - 2² = 56221201 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 (56221201) 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, 5622116 + ... + 5622125.

It is an arithmetic number, because the mean of its divisors is an integer number (16866363).

Almost surely, 2^56221205 is an apocalyptic number.

It is an amenable number.

56221205 is a deficient number, since it is larger than the sum of its proper divisors (11244247).

56221205 is a wasteful number, since it uses less digits than its factorization.

56221205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11244246.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 56221205 is about 7498.0800875958. The cubic root of 56221205 is about 383.0893246518.

The spelling of 56221205 in words is "fifty-six million, two hundred twenty-one thousand, two hundred five".