20118051 has 10 divisors (see below), whose sum is σ = 30053012. Its totient is φ = 13411980.

The previous prime is 20118041. The next prime is 20118067. The reversal of 20118051 is 15081102.

It is not a de Polignac number, because 20118051 - 2¹⁵ = 20085283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20118011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 124105 + ... + 124266.

Almost surely, 2^20118051 is an apocalyptic number.

20118051 is a deficient number, since it is larger than the sum of its proper divisors (9934961).

20118051 is an equidigital number, since it uses as much as digits as its factorization.

20118051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248383 (or 248374 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 20118051 is about 4485.3150391026. The cubic root of 20118051 is about 271.9747804977.

Adding to 20118051 its reverse (15081102), we get a palindrome (35199153).

The spelling of 20118051 in words is "twenty million, one hundred eighteen thousand, fifty-one".