20055111 has 4 divisors (see below), whose sum is σ = 26740152. Its totient is φ = 13370072.

The previous prime is 20055097. The next prime is 20055131. The reversal of 20055111 is 11155002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20055111 - 2⁹ = 20054599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20055131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3342516 + ... + 3342521.

It is an arithmetic number, because the mean of its divisors is an integer number (6685038).

Almost surely, 2^20055111 is an apocalyptic number.

20055111 is a deficient number, since it is larger than the sum of its proper divisors (6685041).

20055111 is an equidigital number, since it uses as much as digits as its factorization.

20055111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6685040.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 20055111 is about 4478.2933133059. The cubic root of 20055111 is about 271.6908567835.

The spelling of 20055111 in words is "twenty million, fifty-five thousand, one hundred eleven".