55198825 has 12 divisors (see below), whose sum is σ = 74669328. Its totient is φ = 40144400.

The previous prime is 55198777. The next prime is 55198841. The reversal of 55198825 is 52889155.

It is not a de Polignac number, because 55198825 - 2⁹ = 55198313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100087 + ... + 100636.

It is an arithmetic number, because the mean of its divisors is an integer number (6222444).

Almost surely, 2^55198825 is an apocalyptic number.

55198825 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55198825 is a deficient number, since it is larger than the sum of its proper divisors (19470503).

55198825 is a wasteful number, since it uses less digits than its factorization.

55198825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200744 (or 200739 counting only the distinct ones).

The product of its digits is 144000, while the sum is 43.

The square root of 55198825 is about 7429.5911731400. The cubic root of 55198825 is about 380.7529507558.

The spelling of 55198825 in words is "fifty-five million, one hundred ninety-eight thousand, eight hundred twenty-five".