55820573 has 2 divisors, whose sum is σ = 55820574. Its totient is φ = 55820572.

The previous prime is 55820561. The next prime is 55820587. The reversal of 55820573 is 37502855.

55820573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55681444 + 139129 = 7462^2 + 373^2 .

It is a cyclic number.

It is not a de Polignac number, because 55820573 - 2¹² = 55816477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55829573) 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 as a sum of consecutive naturals, namely, 27910286 + 27910287.

It is an arithmetic number, because the mean of its divisors is an integer number (27910287).

Almost surely, 2^55820573 is an apocalyptic number.

It is an amenable number.

55820573 is a deficient number, since it is larger than the sum of its proper divisors (1).

55820573 is an equidigital number, since it uses as much as digits as its factorization.

55820573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 55820573 is about 7471.3166844941. The cubic root of 55820573 is about 382.1771904418.

The spelling of 55820573 in words is "fifty-five million, eight hundred twenty thousand, five hundred seventy-three".