20575085 has 4 divisors (see below), whose sum is σ = 24690108. Its totient is φ = 16460064.

The previous prime is 20575073. The next prime is 20575111. The reversal of 20575085 is 58057502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5004169 + 15570916 = 2237^2 + 3946^2 .

It is a cyclic number.

It is not a de Polignac number, because 20575085 - 2⁴ = 20575069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2057504 + ... + 2057513.

It is an arithmetic number, because the mean of its divisors is an integer number (6172527).

Almost surely, 2^20575085 is an apocalyptic number.

It is an amenable number.

20575085 is a deficient number, since it is larger than the sum of its proper divisors (4115023).

20575085 is an equidigital number, since it uses as much as digits as its factorization.

20575085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4115022.

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 20575085 is about 4535.9767415629. The cubic root of 20575085 is about 274.0189173008.

The spelling of 20575085 in words is "twenty million, five hundred seventy-five thousand, eighty-five".