55043000 has 64 divisors (see below), whose sum is σ = 135626400. Its totient is φ = 20851200.

The previous prime is 55042961. The next prime is 55043039. The reversal of 55043000 is 34055.

It is an interprime number because it is at equal distance from previous prime (55042961) and next prime (55043039).

It is a self number, because there is not a number n which added to its sum of digits gives 55043000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17552 + ... + 20448.

Almost surely, 2^55043000 is an apocalyptic number.

55043000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55043000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67813200).

55043000 is an abundant number, since it is smaller than the sum of its proper divisors (80583400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55043000 is a wasteful number, since it uses less digits than its factorization.

55043000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2937 (or 2923 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 55043000 is about 7419.0969800913. The cubic root of 55043000 is about 380.3943275053.

Adding to 55043000 its reverse (34055), we get a palindrome (55077055).

The spelling of 55043000 in words is "fifty-five million, forty-three thousand".