55870189 has 2 divisors, whose sum is σ = 55870190. Its totient is φ = 55870188.

The previous prime is 55870183. The next prime is 55870231. The reversal of 55870189 is 98107855.

55870189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51008164 + 4862025 = 7142^2 + 2205^2 .

It is a cyclic number.

It is not a de Polignac number, because 55870189 - 2³ = 55870181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55870181) by changing a digit.

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 as a sum of consecutive naturals, namely, 27935094 + 27935095.

It is an arithmetic number, because the mean of its divisors is an integer number (27935095).

Almost surely, 2^55870189 is an apocalyptic number.

It is an amenable number.

55870189 is a deficient number, since it is larger than the sum of its proper divisors (1).

55870189 is an equidigital number, since it uses as much as digits as its factorization.

55870189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 43.

The square root of 55870189 is about 7474.6363791157. The cubic root of 55870189 is about 382.2903893760.

The spelling of 55870189 in words is "fifty-five million, eight hundred seventy thousand, one hundred eighty-nine".