55204889 has 2 divisors, whose sum is σ = 55204890. Its totient is φ = 55204888.

The previous prime is 55204873. The next prime is 55204913. The reversal of 55204889 is 98840255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54760000 + 444889 = 7400^2 + 667^2 .

It is a cyclic number.

It is not a de Polignac number, because 55204889 - 2⁴ = 55204873 is a prime.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27602444 + 27602445.

It is an arithmetic number, because the mean of its divisors is an integer number (27602445).

Almost surely, 2^55204889 is an apocalyptic number.

It is an amenable number.

55204889 is a deficient number, since it is larger than the sum of its proper divisors (1).

55204889 is an equidigital number, since it uses as much as digits as its factorization.

55204889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 55204889 is about 7429.9992597577. Note that the first 3 decimals coincide. The cubic root of 55204889 is about 380.7668930897.

The spelling of 55204889 in words is "fifty-five million, two hundred four thousand, eight hundred eighty-nine".