20555343 has 16 divisors (see below), whose sum is σ = 30680160. Its totient is φ = 13601088.

The previous prime is 20555323. The next prime is 20555347. The reversal of 20555343 is 34355502.

It is not a de Polignac number, because 20555343 - 2¹⁰ = 20554319 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20555347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 921 + ... + 6477.

It is an arithmetic number, because the mean of its divisors is an integer number (1917510).

Almost surely, 2^20555343 is an apocalyptic number.

20555343 is a deficient number, since it is larger than the sum of its proper divisors (10124817).

20555343 is a wasteful number, since it uses less digits than its factorization.

20555343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5703 (or 5697 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 20555343 is about 4533.8000617583. The cubic root of 20555343 is about 273.9312479570.

The spelling of 20555343 in words is "twenty million, five hundred fifty-five thousand, three hundred forty-three".