55142200 has 24 divisors (see below), whose sum is σ = 128206080. Its totient is φ = 22056800.

The previous prime is 55142189. The next prime is 55142239. The reversal of 55142200 is 224155.

55142200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137656 + ... + 138055.

It is an arithmetic number, because the mean of its divisors is an integer number (5341920).

Almost surely, 2^55142200 is an apocalyptic number.

55142200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55142200 is an abundant number, since it is smaller than the sum of its proper divisors (73063880).

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

55142200 is a wasteful number, since it uses less digits than its factorization.

55142200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275727 (or 275718 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 55142200 is about 7425.7794203706. The cubic root of 55142200 is about 380.6227093818.

Adding to 55142200 its reverse (224155), we get a palindrome (55366355).

The spelling of 55142200 in words is "fifty-five million, one hundred forty-two thousand, two hundred".