2555543 has 2 divisors, whose sum is σ = 2555544. Its totient is φ = 2555542.

The previous prime is 2555521. The next prime is 2555549. The reversal of 2555543 is 3455552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2555543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277771 + 1277772.

It is an arithmetic number, because the mean of its divisors is an integer number (1277772).

2^2555543 is an apocalyptic number.

2555543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555543 is an equidigital number, since it uses as much as digits as its factorization.

2555543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15000, while the sum is 29.

The square root of 2555543 is about 1598.6065807446. The cubic root of 2555543 is about 136.7186404211.

Subtracting 2555543 from its reverse (3455552), we obtain a palindrome (900009).

The spelling of 2555543 in words is "two million, five hundred fifty-five thousand, five hundred forty-three".