20445054 has 48 divisors (see below), whose sum is σ = 47942928. Its totient is φ = 5795328.

The previous prime is 20445041. The next prime is 20445071. The reversal of 20445054 is 45054402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57742 + ... + 58094.

It is an arithmetic number, because the mean of its divisors is an integer number (998811).

Almost surely, 2^20445054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20445054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23971464).

20445054 is an abundant number, since it is smaller than the sum of its proper divisors (27497874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20445054 is a wasteful number, since it uses less digits than its factorization.

20445054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 20445054 is about 4521.6207271287. The cubic root of 20445054 is about 273.4404461549.

Adding to 20445054 its reverse (45054402), we get a palindrome (65499456).

The spelling of 20445054 in words is "twenty million, four hundred forty-five thousand, fifty-four".