20544897 has 8 divisors (see below), whose sum is σ = 27414144. Its totient is φ = 13686128.

The previous prime is 20544889. The next prime is 20544899. The reversal of 20544897 is 79844502.

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 20544897 - 2³ = 20544889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20544899) by changing a digit.

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, 6283 + ... + 8975.

It is an arithmetic number, because the mean of its divisors is an integer number (3426768).

Almost surely, 2^20544897 is an apocalyptic number.

It is an amenable number.

20544897 is a deficient number, since it is larger than the sum of its proper divisors (6869247).

20544897 is a wasteful number, since it uses less digits than its factorization.

20544897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5239.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 20544897 is about 4532.6479016134. The cubic root of 20544897 is about 273.8848371418.

The spelling of 20544897 in words is "twenty million, five hundred forty-four thousand, eight hundred ninety-seven".