20059521 has 4 divisors (see below), whose sum is σ = 26746032. Its totient is φ = 13373012.

The previous prime is 20059517. The next prime is 20059531. The reversal of 20059521 is 12595002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20059521 - 2² = 20059517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20059491 and 20059500.

It is not an unprimeable number, because it can be changed into a prime (20059531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3343251 + ... + 3343256.

It is an arithmetic number, because the mean of its divisors is an integer number (6686508).

Almost surely, 2^20059521 is an apocalyptic number.

It is an amenable number.

20059521 is a deficient number, since it is larger than the sum of its proper divisors (6686511).

20059521 is an equidigital number, since it uses as much as digits as its factorization.

20059521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6686510.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 20059521 is about 4478.7856613149. The cubic root of 20059521 is about 271.7107697268.

The spelling of 20059521 in words is "twenty million, fifty-nine thousand, five hundred twenty-one".