20595445 has 8 divisors (see below), whose sum is σ = 26615736. Its totient is φ = 15208896.

The previous prime is 20595437. The next prime is 20595457. The reversal of 20595445 is 54459502.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 935089 + 19660356 = 967^2 + 4434^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20595445 - 2³ = 20595437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20595445.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158362 + ... + 158491.

It is an arithmetic number, because the mean of its divisors is an integer number (3326967).

Almost surely, 2^20595445 is an apocalyptic number.

It is an amenable number.

20595445 is a deficient number, since it is larger than the sum of its proper divisors (6020291).

20595445 is a wasteful number, since it uses less digits than its factorization.

20595445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316871.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 20595445 is about 4538.2204662180. The cubic root of 20595445 is about 274.1092723092.

The spelling of 20595445 in words is "twenty million, five hundred ninety-five thousand, four hundred forty-five".