81255343 has 16 divisors (see below), whose sum is σ = 96122880. Its totient is φ = 67963104.

The previous prime is 81255329. The next prime is 81255347. The reversal of 81255343 is 34355218.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81255343 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 (81255347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1471 + ... + 12832.

It is an arithmetic number, because the mean of its divisors is an integer number (6007680).

Almost surely, 2^81255343 is an apocalyptic number.

81255343 is a deficient number, since it is larger than the sum of its proper divisors (14867537).

81255343 is a wasteful number, since it uses less digits than its factorization.

81255343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14358.

The product of its digits is 14400, while the sum is 31.

The square root of 81255343 is about 9014.1745601025. The cubic root of 81255343 is about 433.1290464429.

The spelling of 81255343 in words is "eighty-one million, two hundred fifty-five thousand, three hundred forty-three".