20559195 has 12 divisors (see below), whose sum is σ = 35636016. Its totient is φ = 10964880.

The previous prime is 20559193. The next prime is 20559223. The reversal of 20559195 is 59195502.

It is not a de Polignac number, because 20559195 - 2¹ = 20559193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20559191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 228391 + ... + 228480.

It is an arithmetic number, because the mean of its divisors is an integer number (2969668).

Almost surely, 2^20559195 is an apocalyptic number.

20559195 is a deficient number, since it is larger than the sum of its proper divisors (15076821).

20559195 is a wasteful number, since it uses less digits than its factorization.

20559195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456882 (or 456879 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 36.

The square root of 20559195 is about 4534.2248510633. The cubic root of 20559195 is about 273.9483581436.

The spelling of 20559195 in words is "twenty million, five hundred fifty-nine thousand, one hundred ninety-five".