55445322 has 16 divisors (see below), whose sum is σ = 111108960. Its totient is φ = 18445392.

The previous prime is 55445321. The next prime is 55445333. The reversal of 55445322 is 22354455.

It is a self number, because there is not a number n which added to its sum of digits gives 55445322.

It is not an unprimeable number, because it can be changed into a prime (55445321) 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, 5697 + ... + 11972.

It is an arithmetic number, because the mean of its divisors is an integer number (6944310).

Almost surely, 2^55445322 is an apocalyptic number.

55445322 is an abundant number, since it is smaller than the sum of its proper divisors (55663638).

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

55445322 is a wasteful number, since it uses less digits than its factorization.

55445322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18197.

The product of its digits is 24000, while the sum is 30.

The square root of 55445322 is about 7446.1615615027. The cubic root of 55445322 is about 381.3188752390.

Adding to 55445322 its reverse (22354455), we get a palindrome (77799777).

The spelling of 55445322 in words is "fifty-five million, four hundred forty-five thousand, three hundred twenty-two".