2553543 has 24 divisors (see below), whose sum is σ = 3946800. Its totient is φ = 1586304.

The previous prime is 2553541. The next prime is 2553547. The reversal of 2553543 is 3453552.

It is not a de Polignac number, because 2553543 - 2¹ = 2553541 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁶ + 5⁴ + 5⁴ + 3⁷ + 5⁹ + 4 + 3¹² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2553541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18571 + ... + 18707.

It is an arithmetic number, because the mean of its divisors is an integer number (164450).

2^2553543 is an apocalyptic number.

2553543 is a deficient number, since it is larger than the sum of its proper divisors (1393257).

2553543 is a wasteful number, since it uses less digits than its factorization.

2553543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 268 counting only the distinct ones).

The product of its digits is 9000, while the sum is 27.

The square root of 2553543 is about 1597.9809135281. The cubic root of 2553543 is about 136.6829652054.

Subtracting 2553543 from its reverse (3453552), we obtain a palindrome (900009).

The spelling of 2553543 in words is "two million, five hundred fifty-three thousand, five hundred forty-three".