1255543 has 8 divisors (see below), whose sum is σ = 1302336. Its totient is φ = 1209600.

The previous prime is 1255519. The next prime is 1255549. The reversal of 1255543 is 3455521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1255543 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 (1255549) 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 in 7 ways as a sum of consecutive naturals, for example, 4498 + ... + 4768.

It is an arithmetic number, because the mean of its divisors is an integer number (162792).

2^1255543 is an apocalyptic number.

1255543 is a deficient number, since it is larger than the sum of its proper divisors (46793).

1255543 is a wasteful number, since it uses less digits than its factorization.

1255543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425.

The product of its digits is 3000, while the sum is 25.

The square root of 1255543 is about 1120.5101516720. The cubic root of 1255543 is about 107.8807268073.

It can be divided in two parts, 12 and 55543, that added together give a palindrome (55555).

The spelling of 1255543 in words is "one million, two hundred fifty-five thousand, five hundred forty-three".