20530595 has 4 divisors (see below), whose sum is σ = 24636720. Its totient is φ = 16424472.

The previous prime is 20530567. The next prime is 20530603. The reversal of 20530595 is 59503502.

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

It is a cyclic number.

It is not a de Polignac number, because 20530595 - 2²⁰ = 19482019 is a prime.

It is a super-3 number, since 3×20530595³ (a number of 23 digits) contains 333 as substring.

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, 2053055 + ... + 2053064.

It is an arithmetic number, because the mean of its divisors is an integer number (6159180).

Almost surely, 2^20530595 is an apocalyptic number.

20530595 is a deficient number, since it is larger than the sum of its proper divisors (4106125).

20530595 is an equidigital number, since it uses as much as digits as its factorization.

20530595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4106124.

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 20530595 is about 4531.0699619406. The cubic root of 20530595 is about 273.8212688790.

The spelling of 20530595 in words is "twenty million, five hundred thirty thousand, five hundred ninety-five".