2173573 has 2 divisors, whose sum is σ = 2173574. Its totient is φ = 2173572.

The previous prime is 2173571. The next prime is 2173601. The reversal of 2173573 is 3753712.

It is an a-pointer prime, because the next prime (2173601) can be obtained adding 2173573 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2169729 + 3844 = 1473^2 + 62^2 .

It is a cyclic number.

It is not a de Polignac number, because 2173573 - 2¹ = 2173571 is a prime.

Together with 2173571, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2173571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086786 + 1086787.

It is an arithmetic number, because the mean of its divisors is an integer number (1086787).

2^2173573 is an apocalyptic number.

It is an amenable number.

2173573 is a deficient number, since it is larger than the sum of its proper divisors (1).

2173573 is an equidigital number, since it uses as much as digits as its factorization.

2173573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4410, while the sum is 28.

The square root of 2173573 is about 1474.3042426853. The cubic root of 2173573 is about 129.5362768133.

The spelling of 2173573 in words is "two million, one hundred seventy-three thousand, five hundred seventy-three".