5545891 has 8 divisors (see below), whose sum is σ = 6287120. Its totient is φ = 4849632.

The previous prime is 5545889. The next prime is 5545901. The reversal of 5545891 is 1985455.

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

It is a cyclic number.

It is not a de Polignac number, because 5545891 - 2¹ = 5545889 is a prime.

It is a Duffinian number.

5545891 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5545891.

It is not an unprimeable number, because it can be changed into a prime (5545801) 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 7 ways as a sum of consecutive naturals, for example, 10980 + ... + 11473.

It is an arithmetic number, because the mean of its divisors is an integer number (785890).

Almost surely, 2^5545891 is an apocalyptic number.

5545891 is a deficient number, since it is larger than the sum of its proper divisors (741229).

5545891 is a wasteful number, since it uses less digits than its factorization.

5545891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22485.

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

The square root of 5545891 is about 2354.9715497220. The cubic root of 5545891 is about 177.0070006913.

The spelling of 5545891 in words is "five million, five hundred forty-five thousand, eight hundred ninety-one".