55102172200 has 48 divisors (see below), whose sum is σ = 128320475580. Its totient is φ = 22005096960.

The previous prime is 55102172197. The next prime is 55102172201. The reversal of 55102172200 is 227120155.

It can be written as a sum of positive squares in 6 ways, for example, as 14828907076 + 40273265124 = 121774^2 + 200682^2 .

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

It is not an unprimeable number, because it can be changed into a prime (55102172201) 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, 99867 + ... + 346666.

Almost surely, 2^55102172200 is an apocalyptic number.

55102172200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55102172200 is an abundant number, since it is smaller than the sum of its proper divisors (73218303380).

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

55102172200 is a wasteful number, since it uses less digits than its factorization.

55102172200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447166 (or 447157 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

Adding to 55102172200 its reverse (227120155), we get a palindrome (55329292355).

The spelling of 55102172200 in words is "fifty-five billion, one hundred two million, one hundred seventy-two thousand, two hundred".