2635543 has 2 divisors, whose sum is σ = 2635544. Its totient is φ = 2635542.

The previous prime is 2635489. The next prime is 2635553. The reversal of 2635543 is 3455362.

2635543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2635543 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2635553) 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 as a sum of consecutive naturals, namely, 1317771 + 1317772.

It is an arithmetic number, because the mean of its divisors is an integer number (1317772).

2^2635543 is an apocalyptic number.

2635543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2635543 is an equidigital number, since it uses as much as digits as its factorization.

2635543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 28.

The square root of 2635543 is about 1623.4355546187. The cubic root of 2635543 is about 138.1306436274.

It can be divided in two parts, 26355 and 43, that multiplied together give a triangular number (1133265 = T₁₅₀₅).

The spelling of 2635543 in words is "two million, six hundred thirty-five thousand, five hundred forty-three".