2557303 has 16 divisors (see below), whose sum is σ = 3053376. Its totient is φ = 2096640.

The previous prime is 2557297. The next prime is 2557333. The reversal of 2557303 is 3037552.

It is not a de Polignac number, because 2557303 - 2⁹ = 2556791 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 22575 + ... + 22687.

It is an arithmetic number, because the mean of its divisors is an integer number (190836).

2^2557303 is an apocalyptic number.

2557303 is a deficient number, since it is larger than the sum of its proper divisors (496073).

2557303 is a wasteful number, since it uses less digits than its factorization.

2557303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234.

The product of its (nonzero) digits is 3150, while the sum is 25.

The square root of 2557303 is about 1599.1569654040. The cubic root of 2557303 is about 136.7500192173.

Subtracting 2557303 from its reverse (3037552), we obtain a square (480249 = 693²).

The spelling of 2557303 in words is "two million, five hundred fifty-seven thousand, three hundred three".