20055843 has 10 divisors (see below), whose sum is σ = 29960084. Its totient is φ = 13370508.

The previous prime is 20055829. The next prime is 20055857. The reversal of 20055843 is 34855002.

It is an interprime number because it is at equal distance from previous prime (20055829) and next prime (20055857).

It is not a de Polignac number, because 20055843 - 2¹⁰ = 20054819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20055803) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 123721 + ... + 123882.

Almost surely, 2^20055843 is an apocalyptic number.

20055843 is a deficient number, since it is larger than the sum of its proper divisors (9904241).

20055843 is an equidigital number, since it uses as much as digits as its factorization.

20055843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247615 (or 247606 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 20055843 is about 4478.3750401234. The cubic root of 20055843 is about 271.6941622632.

The spelling of 20055843 in words is "twenty million, fifty-five thousand, eight hundred forty-three".