5521222400 has 108 divisors (see below), whose sum is σ = 13695368232. Its totient is φ = 2203729920.

The previous prime is 5521222397. The next prime is 5521222409. The reversal of 5521222400 is 42221255.

It is not an unprimeable number, because it can be changed into a prime (5521222409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5650712 + ... + 5651688.

Almost surely, 2^5521222400 is an apocalyptic number.

5521222400 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 5521222400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6847684116).

5521222400 is an abundant number, since it is smaller than the sum of its proper divisors (8174145832).

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

5521222400 is an equidigital number, since it uses as much as digits as its factorization.

5521222400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886 (or 1867 counting only the distinct ones).

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

The square root of 5521222400 is about 74304.9285041040. The cubic root of 5521222400 is about 1767.4416314458.

Adding to 5521222400 its reverse (42221255), we get a palindrome (5563443655).

The spelling of 5521222400 in words is "five billion, five hundred twenty-one million, two hundred twenty-two thousand, four hundred".