56221422 has 16 divisors (see below), whose sum is σ = 112949760. Its totient is φ = 18655992.

The previous prime is 56221409. The next prime is 56221427. The reversal of 56221422 is 22412265.

It is a happy number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 56221392 and 56221401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56221427) 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, 19672 + ... + 22347.

It is an arithmetic number, because the mean of its divisors is an integer number (7059360).

Almost surely, 2^56221422 is an apocalyptic number.

56221422 is an abundant number, since it is smaller than the sum of its proper divisors (56728338).

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

56221422 is a wasteful number, since it uses less digits than its factorization.

56221422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42247.

The product of its digits is 1920, while the sum is 24.

The square root of 56221422 is about 7498.0945579527. The cubic root of 56221422 is about 383.0898175280.

Adding to 56221422 its reverse (22412265), we get a palindrome (78633687).

The spelling of 56221422 in words is "fifty-six million, two hundred twenty-one thousand, four hundred twenty-two".