55421322 has 32 divisors (see below), whose sum is σ = 122632704. Its totient is φ = 16556400.

The previous prime is 55421297. The next prime is 55421323. The reversal of 55421322 is 22312455.

55421322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55421292 and 55421301.

It is not an unprimeable number, because it can be changed into a prime (55421323) 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 15 ways as a sum of consecutive naturals, for example, 1228 + ... + 10599.

It is an arithmetic number, because the mean of its divisors is an integer number (3832272).

Almost surely, 2^55421322 is an apocalyptic number.

55421322 is an abundant number, since it is smaller than the sum of its proper divisors (67211382).

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

55421322 is a wasteful number, since it uses less digits than its factorization.

55421322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11914.

The product of its digits is 2400, while the sum is 24.

The square root of 55421322 is about 7444.5498184914. The cubic root of 55421322 is about 381.2638482115.

Adding to 55421322 its reverse (22312455), we get a palindrome (77733777).

The spelling of 55421322 in words is "fifty-five million, four hundred twenty-one thousand, three hundred twenty-two".