55641189 has 8 divisors (see below), whose sum is σ = 75445920. Its totient is φ = 36465296.

The previous prime is 55641161. The next prime is 55641199. The reversal of 55641189 is 98114655.

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-55641189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55641199) 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, 157002 + ... + 157355.

It is an arithmetic number, because the mean of its divisors is an integer number (9430740).

Almost surely, 2^55641189 is an apocalyptic number.

55641189 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

55641189 is a deficient number, since it is larger than the sum of its proper divisors (19804731).

55641189 is a wasteful number, since it uses less digits than its factorization.

55641189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314419.

The product of its digits is 43200, while the sum is 39.

The square root of 55641189 is about 7459.3021791586. The cubic root of 55641189 is about 381.7673651861.

The spelling of 55641189 in words is "fifty-five million, six hundred forty-one thousand, one hundred eighty-nine".