55022122400 has 72 divisors (see below), whose sum is σ = 153511737120. Its totient is φ = 18864725760.

The previous prime is 55022122399. The next prime is 55022122411. The reversal of 55022122400 is 422122055.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4907090 + ... + 4918289.

It is an arithmetic number, because the mean of its divisors is an integer number (2132107460).

Almost surely, 2^55022122400 is an apocalyptic number.

55022122400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55022122400 is an abundant number, since it is smaller than the sum of its proper divisors (98489614720).

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

55022122400 is a wasteful number, since it uses less digits than its factorization.

55022122400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9825406 (or 9825393 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 55022122400 its reverse (422122055), we get a palindrome (55444244455).

The spelling of 55022122400 in words is "fifty-five billion, twenty-two million, one hundred twenty-two thousand, four hundred".