55322000 has 80 divisors (see below), whose sum is σ = 135408000. Its totient is φ = 21859200.

The previous prime is 55321991. The next prime is 55322009. The reversal of 55322000 is 22355.

It is an interprime number because it is at equal distance from previous prime (55321991) and next prime (55322009).

It is a tau number, because it is divible by the number of its divisors (80).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 55322000.

It is not an unprimeable number, because it can be changed into a prime (55322009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277901 + ... + 278099.

It is an arithmetic number, because the mean of its divisors is an integer number (1692600).

Almost surely, 2^55322000 is an apocalyptic number.

55322000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55322000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67704000).

55322000 is an abundant number, since it is smaller than the sum of its proper divisors (80086000).

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

55322000 is a wasteful number, since it uses less digits than its factorization.

55322000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 55322000 is about 7437.8760409138. The cubic root of 55322000 is about 381.0359543826.

Adding to 55322000 its reverse (22355), we get a palindrome (55344355).

The spelling of 55322000 in words is "fifty-five million, three hundred twenty-two thousand".