20556483 has 4 divisors (see below), whose sum is σ = 27408648. Its totient is φ = 13704320.

The previous prime is 20556479. The next prime is 20556491. The reversal of 20556483 is 38465502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20556483 - 2² = 20556479 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20556433) 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 3 ways as a sum of consecutive naturals, for example, 3426078 + ... + 3426083.

It is an arithmetic number, because the mean of its divisors is an integer number (6852162).

Almost surely, 2^20556483 is an apocalyptic number.

20556483 is a deficient number, since it is larger than the sum of its proper divisors (6852165).

20556483 is an equidigital number, since it uses as much as digits as its factorization.

20556483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6852164.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 20556483 is about 4533.9257823657. The cubic root of 20556483 is about 273.9363119421.

The spelling of 20556483 in words is "twenty million, five hundred fifty-six thousand, four hundred eighty-three".