20056547 has 8 divisors (see below), whose sum is σ = 22953216. Its totient is φ = 17167752.

The previous prime is 20056523. The next prime is 20056559. The reversal of 20056547 is 74565002.

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

It is not a de Polignac number, because 20056547 - 2⁸ = 20056291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20056147) 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 7 ways as a sum of consecutive naturals, for example, 5288 + ... + 8250.

It is an arithmetic number, because the mean of its divisors is an integer number (2869152).

Almost surely, 2^20056547 is an apocalyptic number.

20056547 is a deficient number, since it is larger than the sum of its proper divisors (2896669).

20056547 is an equidigital number, since it uses as much as digits as its factorization.

20056547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3937.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 20056547 is about 4478.4536393715. The cubic root of 20056547 is about 271.6973412279.

The spelling of 20056547 in words is "twenty million, fifty-six thousand, five hundred forty-seven".