55522223400 has 288 divisors, whose sum is σ = 200632248000. Its totient is φ = 12664673280.

The previous prime is 55522223389. The next prime is 55522223429. The reversal of 55522223400 is 432222555.

55522223400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 16726941 + ... + 16730259.

It is an arithmetic number, because the mean of its divisors is an integer number (696639750).

Almost surely, 2^55522223400 is an apocalyptic number.

55522223400 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 55522223400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100316124000).

55522223400 is an abundant number, since it is smaller than the sum of its proper divisors (145110024600).

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

55522223400 is a wasteful number, since it uses less digits than its factorization.

55522223400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3921 (or 3905 counting only the distinct ones).

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

Adding to 55522223400 its reverse (432222555), we get a palindrome (55954445955).

The spelling of 55522223400 in words is "fifty-five billion, five hundred twenty-two million, two hundred twenty-three thousand, four hundred".