20500054 has 4 divisors (see below), whose sum is σ = 30750084. Its totient is φ = 10250026.

The previous prime is 20500049. The next prime is 20500063. The reversal of 20500054 is 45000502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5125012 + ... + 5125015.

It is an arithmetic number, because the mean of its divisors is an integer number (7687521).

Almost surely, 2^20500054 is an apocalyptic number.

20500054 is a deficient number, since it is larger than the sum of its proper divisors (10250030).

20500054 is a wasteful number, since it uses less digits than its factorization.

20500054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10250029.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 20500054 is about 4527.6985323672. The cubic root of 20500054 is about 273.6854240487.

Adding to 20500054 its reverse (45000502), we get a palindrome (65500556).

The spelling of 20500054 in words is "twenty million, five hundred thousand, fifty-four".