20454011 has 4 divisors (see below), whose sum is σ = 20510112. Its totient is φ = 20397912.

The previous prime is 20454001. The next prime is 20454023. The reversal of 20454011 is 11045402.

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 20454011 - 2¹⁸ = 20191867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20454001) 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 3 ways as a sum of consecutive naturals, for example, 27500 + ... + 28233.

It is an arithmetic number, because the mean of its divisors is an integer number (5127528).

Almost surely, 2^20454011 is an apocalyptic number.

20454011 is a deficient number, since it is larger than the sum of its proper divisors (56101).

20454011 is an equidigital number, since it uses as much as digits as its factorization.

20454011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56100.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 20454011 is about 4522.6110821073. The cubic root of 20454011 is about 273.4803718422.

Adding to 20454011 its reverse (11045402), we get a palindrome (31499413).

It can be divided in two parts, 2045401 and 1, that added together give a palindrome (2045402).

The spelling of 20454011 in words is "twenty million, four hundred fifty-four thousand, eleven".