20054505 has 16 divisors (see below), whose sum is σ = 33482880. Its totient is φ = 10230528.

The previous prime is 20054491. The next prime is 20054521. The reversal of 20054505 is 50545002.

It is not a de Polignac number, because 20054505 - 2⁸ = 20054249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28720 + ... + 29409.

It is an arithmetic number, because the mean of its divisors is an integer number (2092680).

Almost surely, 2^20054505 is an apocalyptic number.

It is an amenable number.

20054505 is a deficient number, since it is larger than the sum of its proper divisors (13428375).

20054505 is a wasteful number, since it uses less digits than its factorization.

20054505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58160.

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 20054505 is about 4478.2256530907. The cubic root of 20054505 is about 271.6881202189.

Adding to 20054505 its reverse (50545002), we get a palindrome (70599507).

The spelling of 20054505 in words is "twenty million, fifty-four thousand, five hundred five".