7255543 has 4 divisors (see below), whose sum is σ = 7355008. Its totient is φ = 7156080.

The previous prime is 7255529. The next prime is 7255609. The reversal of 7255543 is 3455527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7255543 - 2¹³ = 7247351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7255513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49623 + ... + 49768.

It is an arithmetic number, because the mean of its divisors is an integer number (1838752).

Almost surely, 2^7255543 is an apocalyptic number.

7255543 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

7255543 is a deficient number, since it is larger than the sum of its proper divisors (99465).

7255543 is an equidigital number, since it uses as much as digits as its factorization.

7255543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99464.

The product of its digits is 21000, while the sum is 31.

The square root of 7255543 is about 2693.6115161619. The cubic root of 7255543 is about 193.5931442231.

The spelling of 7255543 in words is "seven million, two hundred fifty-five thousand, five hundred forty-three".