81105350 has 24 divisors (see below), whose sum is σ = 152772960. Its totient is φ = 32029920.

The previous prime is 81105347. The next prime is 81105371. The reversal of 81105350 is 5350118.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6317 + ... + 14216.

It is an arithmetic number, because the mean of its divisors is an integer number (6365540).

Almost surely, 2^81105350 is an apocalyptic number.

81105350 is a deficient number, since it is larger than the sum of its proper divisors (71667610).

81105350 is a wasteful number, since it uses less digits than its factorization.

81105350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20624 (or 20619 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 81105350 is about 9005.8508759584. The cubic root of 81105350 is about 432.8623712989.

Adding to 81105350 its reverse (5350118), we get a palindrome (86455468).

The spelling of 81105350 in words is "eighty-one million, one hundred five thousand, three hundred fifty".