2557323 has 12 divisors (see below), whose sum is σ = 3749928. Its totient is φ = 1679040.

The previous prime is 2557297. The next prime is 2557333. The reversal of 2557323 is 3237552.

It is not a de Polignac number, because 2557323 - 2⁸ = 2557067 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹¹ + 5⁵ + 5⁹ + 7³ + 3¹⁰ + 2¹³ + 3¹² .

It is not an unprimeable number, because it can be changed into a prime (2557333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1518 + ... + 2723.

It is an arithmetic number, because the mean of its divisors is an integer number (312494).

2^2557323 is an apocalyptic number.

2557323 is a deficient number, since it is larger than the sum of its proper divisors (1192605).

2557323 is a wasteful number, since it uses less digits than its factorization.

2557323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4314 (or 4311 counting only the distinct ones).

The product of its digits is 6300, while the sum is 27.

The square root of 2557323 is about 1599.1632186866. The cubic root of 2557323 is about 136.7503757118.

The spelling of 2557323 in words is "two million, five hundred fifty-seven thousand, three hundred twenty-three".