20514445 has 16 divisors (see below), whose sum is σ = 28667520. Its totient is φ = 13800384.

The previous prime is 20514443. The next prime is 20514449. The reversal of 20514445 is 54441502.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20514445 - 2¹ = 20514443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20514443) 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 15 ways as a sum of consecutive naturals, for example, 3675 + ... + 7384.

It is an arithmetic number, because the mean of its divisors is an integer number (1791720).

Almost surely, 2^20514445 is an apocalyptic number.

It is an amenable number.

20514445 is a deficient number, since it is larger than the sum of its proper divisors (8153075).

20514445 is a wasteful number, since it uses less digits than its factorization.

20514445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11124.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 20514445 is about 4529.2874715566. The cubic root of 20514445 is about 273.7494512892.

Adding to 20514445 its reverse (54441502), we get a palindrome (74955947).

The spelling of 20514445 in words is "twenty million, five hundred fourteen thousand, four hundred forty-five".