20052105 has 16 divisors (see below), whose sum is σ = 32145984. Its totient is φ = 10673600.

The previous prime is 20052101. The next prime is 20052119. The reversal of 20052105 is 50125002.

It is not a de Polignac number, because 20052105 - 2² = 20052101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (20052101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9562 + ... + 11468.

It is an arithmetic number, because the mean of its divisors is an integer number (2009124).

Almost surely, 2^20052105 is an apocalyptic number.

It is an amenable number.

20052105 is a deficient number, since it is larger than the sum of its proper divisors (12093879).

20052105 is a wasteful number, since it uses less digits than its factorization.

20052105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 20052105 is about 4477.9576818009. The cubic root of 20052105 is about 271.6772817980.

Adding to 20052105 its reverse (50125002), we get a palindrome (70177107).

The spelling of 20052105 in words is "twenty million, fifty-two thousand, one hundred five".