20095559 has 12 divisors (see below), whose sum is σ = 23253720. Its totient is φ = 17305200.

The previous prime is 20095553. The next prime is 20095561. The reversal of 20095559 is 95559002.

It is a de Polignac number, because none of the positive numbers 2^k-20095559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20095553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2072 + ... + 6669.

It is an arithmetic number, because the mean of its divisors is an integer number (1937810).

Almost surely, 2^20095559 is an apocalyptic number.

20095559 is a deficient number, since it is larger than the sum of its proper divisors (3158161).

20095559 is a wasteful number, since it uses less digits than its factorization.

20095559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8782 (or 8771 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 20095559 is about 4482.8070446987. The cubic root of 20095559 is about 271.8733866818.

It can be divided in two parts, 200 and 95559, that added together give a palindrome (95759).

The spelling of 20095559 in words is "twenty million, ninety-five thousand, five hundred fifty-nine".