20243051 has 4 divisors (see below), whose sum is σ = 20279952. Its totient is φ = 20206152.

The previous prime is 20243029. The next prime is 20243063. The reversal of 20243051 is 15034202.

20243051 is nontrivially palindromic in base 7.

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 20243051 - 2¹⁸ = 19980907 is a prime.

It is a super-2 number, since 2×20243051² = 819562227577202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20243011) 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, 17615 + ... + 18728.

It is an arithmetic number, because the mean of its divisors is an integer number (5069988).

Almost surely, 2^20243051 is an apocalyptic number.

20243051 is a deficient number, since it is larger than the sum of its proper divisors (36901).

20243051 is an equidigital number, since it uses as much as digits as its factorization.

20243051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36900.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20243051 is about 4499.2278226380. The cubic root of 20243051 is about 272.5369071578.

Adding to 20243051 its reverse (15034202), we get a palindrome (35277253).

The spelling of 20243051 in words is "twenty million, two hundred forty-three thousand, fifty-one".