20054501 has 4 divisors (see below), whose sum is σ = 20063904. Its totient is φ = 20045100.

The previous prime is 20054491. The next prime is 20054521. The reversal of 20054501 is 10545002.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20054501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20054501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20054521) 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, 206 + ... + 6336.

It is an arithmetic number, because the mean of its divisors is an integer number (5015976).

Almost surely, 2^20054501 is an apocalyptic number.

It is an amenable number.

20054501 is a deficient number, since it is larger than the sum of its proper divisors (9403).

20054501 is an equidigital number, since it uses as much as digits as its factorization.

20054501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9402.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 20054501 is about 4478.2252064853. The cubic root of 20054501 is about 271.6881021556.

Adding to 20054501 its reverse (10545002), we get a palindrome (30599503).

The spelling of 20054501 in words is "twenty million, fifty-four thousand, five hundred one".