81044354 has 16 divisors (see below), whose sum is σ = 127008000. Its totient is φ = 38740080.

The previous prime is 81044351. The next prime is 81044371. The reversal of 81044354 is 45344018.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (81044351) 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, 2729 + ... + 13020.

It is an arithmetic number, because the mean of its divisors is an integer number (7938000).

Almost surely, 2^81044354 is an apocalyptic number.

81044354 is a deficient number, since it is larger than the sum of its proper divisors (45963646).

81044354 is a wasteful number, since it uses less digits than its factorization.

81044354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15865.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 81044354 is about 9002.4637738788. The cubic root of 81044354 is about 432.7538314192.

The spelling of 81044354 in words is "eighty-one million, forty-four thousand, three hundred fifty-four".