20053745 has 8 divisors (see below), whose sum is σ = 24840960. Its totient is φ = 15525360.

The previous prime is 20053717. The next prime is 20053763. The reversal of 20053745 is 54735002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20053745 - 2¹² = 20049649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64535 + ... + 64844.

It is an arithmetic number, because the mean of its divisors is an integer number (3105120).

Almost surely, 2^20053745 is an apocalyptic number.

It is an amenable number.

20053745 is a deficient number, since it is larger than the sum of its proper divisors (4787215).

20053745 is a wasteful number, since it uses less digits than its factorization.

20053745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129415.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 20053745 is about 4478.1407972506. The cubic root of 20053745 is about 271.6846881459.

Adding to 20053745 its reverse (54735002), we get a palindrome (74788747).

The spelling of 20053745 in words is "twenty million, fifty-three thousand, seven hundred forty-five".