55032215200 has 36 divisors (see below), whose sum is σ = 134347397310. Its totient is φ = 22012885760.

The previous prime is 55032215177. The next prime is 55032215221. The reversal of 55032215200 is 251223055.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 29264260624 + 25767954576 = 171068^2 + 160524^2 .

It is a super-2 number, since 2×55032215200² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34394335 + ... + 34395934.

Almost surely, 2^55032215200 is an apocalyptic number.

55032215200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55032215200 is an abundant number, since it is smaller than the sum of its proper divisors (79315182110).

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

55032215200 is a wasteful number, since it uses less digits than its factorization.

55032215200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68790289 (or 68790276 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

Adding to 55032215200 its reverse (251223055), we get a palindrome (55283438255).

The spelling of 55032215200 in words is "fifty-five billion, thirty-two million, two hundred fifteen thousand, two hundred".