20050051 has 4 divisors (see below), whose sum is σ = 22914352. Its totient is φ = 17185752.

The previous prime is 20050039. The next prime is 20050057. The reversal of 20050051 is 15005002.

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 20050051 - 2¹³ = 20041859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20050057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1432140 + ... + 1432153.

It is an arithmetic number, because the mean of its divisors is an integer number (5728588).

Almost surely, 2^20050051 is an apocalyptic number.

20050051 is a deficient number, since it is larger than the sum of its proper divisors (2864301).

20050051 is an equidigital number, since it uses as much as digits as its factorization.

20050051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864300.

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 20050051 is about 4477.7283303032. The cubic root of 20050051 is about 271.6680052292.

Adding to 20050051 its reverse (15005002), we get a palindrome (35055053).

The spelling of 20050051 in words is "twenty million, fifty thousand, fifty-one".