2557173 has 4 divisors (see below), whose sum is σ = 3409568. Its totient is φ = 1704780.

The previous prime is 2557171. The next prime is 2557199. The reversal of 2557173 is 3717552.

2557173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2557173 - 2¹ = 2557171 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2557173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557171) 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 3 ways as a sum of consecutive naturals, for example, 426193 + ... + 426198.

It is an arithmetic number, because the mean of its divisors is an integer number (852392).

2^2557173 is an apocalyptic number.

It is an amenable number.

2557173 is a deficient number, since it is larger than the sum of its proper divisors (852395).

2557173 is an equidigital number, since it uses as much as digits as its factorization.

2557173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852394.

The product of its digits is 7350, while the sum is 30.

The square root of 2557173 is about 1599.1163184709. The cubic root of 2557173 is about 136.7477019579.

The spelling of 2557173 in words is "two million, five hundred fifty-seven thousand, one hundred seventy-three".