20548573 has 2 divisors, whose sum is σ = 20548574. Its totient is φ = 20548572.

The previous prime is 20548553. The next prime is 20548613. The reversal of 20548573 is 37584502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20548089 + 484 = 4533^2 + 22^2 .

It is a cyclic number.

It is not a de Polignac number, because 20548573 - 2²¹ = 18451421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20548513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10274286 + 10274287.

It is an arithmetic number, because the mean of its divisors is an integer number (10274287).

Almost surely, 2^20548573 is an apocalyptic number.

It is an amenable number.

20548573 is a deficient number, since it is larger than the sum of its proper divisors (1).

20548573 is an equidigital number, since it uses as much as digits as its factorization.

20548573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 20548573 is about 4533.0533859640. The cubic root of 20548573 is about 273.9011711349.

The spelling of 20548573 in words is "twenty million, five hundred forty-eight thousand, five hundred seventy-three".