55043999 has 8 divisors (see below), whose sum is σ = 56426832. Its totient is φ = 53665920.

The previous prime is 55043993. The next prime is 55044029. The reversal of 55043999 is 99934055.

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 55043999 - 2¹⁶ = 54978463 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 (55043993) 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, 37157 + ... + 38609.

It is an arithmetic number, because the mean of its divisors is an integer number (7053354).

Almost surely, 2^55043999 is an apocalyptic number.

55043999 is a deficient number, since it is larger than the sum of its proper divisors (1382833).

55043999 is a wasteful number, since it uses less digits than its factorization.

55043999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377.

The product of its (nonzero) digits is 218700, while the sum is 44.

The square root of 55043999 is about 7419.1643060388. The cubic root of 55043999 is about 380.3966288070.

The spelling of 55043999 in words is "fifty-five million, forty-three thousand, nine hundred ninety-nine".