55727189 has 8 divisors (see below), whose sum is σ = 63755328. Its totient is φ = 47715840.

The previous prime is 55727167. The next prime is 55727197. The reversal of 55727189 is 98172755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55727189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55727129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3989 + ... + 11285.

It is an arithmetic number, because the mean of its divisors is an integer number (7969416).

Almost surely, 2^55727189 is an apocalyptic number.

It is an amenable number.

55727189 is a deficient number, since it is larger than the sum of its proper divisors (8028139).

55727189 is a wasteful number, since it uses less digits than its factorization.

55727189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8395.

The product of its digits is 176400, while the sum is 44.

The square root of 55727189 is about 7465.0645677047. The cubic root of 55727189 is about 381.9639527218.

The spelling of 55727189 in words is "fifty-five million, seven hundred twenty-seven thousand, one hundred eighty-nine".