55550222400 has 84 divisors (see below), whose sum is σ = 182251037072. Its totient is φ = 14813391360.

The previous prime is 55550222297. The next prime is 55550222401. The reversal of 55550222400 is 422205555.

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

It is not an unprimeable number, because it can be changed into a prime (55550222401) 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, 5781682 + ... + 5791281.

Almost surely, 2^55550222400 is an apocalyptic number.

55550222400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55550222400 is an abundant number, since it is smaller than the sum of its proper divisors (126700814672).

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

55550222400 is a wasteful number, since it uses less digits than its factorization.

55550222400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11572988 (or 11572973 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

Adding to 55550222400 its reverse (422205555), we get a palindrome (55972427955).

The spelling of 55550222400 in words is "fifty-five billion, five hundred fifty million, two hundred twenty-two thousand, four hundred".