55931189 has 8 divisors (see below), whose sum is σ = 56403360. Its totient is φ = 55461456.

The previous prime is 55931171. The next prime is 55931191. The reversal of 55931189 is 98113955.

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-55931189 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 (55931119) 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, 106682 + ... + 107204.

It is an arithmetic number, because the mean of its divisors is an integer number (7050420).

Almost surely, 2^55931189 is an apocalyptic number.

It is an amenable number.

55931189 is a deficient number, since it is larger than the sum of its proper divisors (472171).

55931189 is a wasteful number, since it uses less digits than its factorization.

55931189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219.

The product of its digits is 48600, while the sum is 41.

The square root of 55931189 is about 7478.7157319957. The cubic root of 55931189 is about 382.4294691033.

The spelling of 55931189 in words is "fifty-five million, nine hundred thirty-one thousand, one hundred eighty-nine".