55358189 has 4 divisors (see below), whose sum is σ = 55606656. Its totient is φ = 55109724.

The previous prime is 55358167. The next prime is 55358197. The reversal of 55358189 is 98185355.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98185355 = 5 ⋅19637071.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55358189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55358389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123899 + ... + 124344.

It is an arithmetic number, because the mean of its divisors is an integer number (13901664).

Almost surely, 2^55358189 is an apocalyptic number.

It is an amenable number.

55358189 is a deficient number, since it is larger than the sum of its proper divisors (248467).

55358189 is a wasteful number, since it uses less digits than its factorization.

55358189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248466.

The product of its digits is 216000, while the sum is 44.

The square root of 55358189 is about 7440.3083941460. The cubic root of 55358189 is about 381.1190214233.

The spelling of 55358189 in words is "fifty-five million, three hundred fifty-eight thousand, one hundred eighty-nine".