20459541 has 4 divisors (see below), whose sum is σ = 27279392. Its totient is φ = 13639692.

The previous prime is 20459539. The next prime is 20459563. The reversal of 20459541 is 14595402.

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 not a de Polignac number, because 20459541 - 2¹ = 20459539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20459499 and 20459508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20459741) 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, 3409921 + ... + 3409926.

It is an arithmetic number, because the mean of its divisors is an integer number (6819848).

Almost surely, 2^20459541 is an apocalyptic number.

It is an amenable number.

20459541 is a deficient number, since it is larger than the sum of its proper divisors (6819851).

20459541 is an equidigital number, since it uses as much as digits as its factorization.

20459541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6819850.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 20459541 is about 4523.2224132802. Note that the first 3 decimals coincide. The cubic root of 20459541 is about 273.5050159113.

The spelling of 20459541 in words is "twenty million, four hundred fifty-nine thousand, five hundred forty-one".