55450189 has 4 divisors (see below), whose sum is σ = 58368640. Its totient is φ = 52531740.

The previous prime is 55450169. The next prime is 55450193. The reversal of 55450189 is 98105455.

55450189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55450189 - 2⁷ = 55450061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55450169) 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 in 3 ways as a sum of consecutive naturals, for example, 1459197 + ... + 1459234.

It is an arithmetic number, because the mean of its divisors is an integer number (14592160).

Almost surely, 2^55450189 is an apocalyptic number.

It is an amenable number.

55450189 is a deficient number, since it is larger than the sum of its proper divisors (2918451).

55450189 is a wasteful number, since it uses less digits than its factorization.

55450189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918450.

The product of its (nonzero) digits is 36000, while the sum is 37.

The square root of 55450189 is about 7446.4883670090. The cubic root of 55450189 is about 381.3300323249.

The spelling of 55450189 in words is "fifty-five million, four hundred fifty thousand, one hundred eighty-nine".