20051133 has 4 divisors (see below), whose sum is σ = 26734848. Its totient is φ = 13367420.

The previous prime is 20051131. The next prime is 20051149. The reversal of 20051133 is 33115002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20051133 - 2¹ = 20051131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20051131) 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, 3341853 + ... + 3341858.

It is an arithmetic number, because the mean of its divisors is an integer number (6683712).

Almost surely, 2^20051133 is an apocalyptic number.

It is an amenable number.

20051133 is a deficient number, since it is larger than the sum of its proper divisors (6683715).

20051133 is an equidigital number, since it uses as much as digits as its factorization.

20051133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6683714.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 20051133 is about 4477.8491488660. The cubic root of 20051133 is about 271.6728919915.

Adding to 20051133 its reverse (33115002), we get a palindrome (53166135).

The spelling of 20051133 in words is "twenty million, fifty-one thousand, one hundred thirty-three".