81050330 has 16 divisors (see below), whose sum is σ = 147649824. Its totient is φ = 32029200.

The previous prime is 81050323. The next prime is 81050357. The reversal of 81050330 is 3305018.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47996 + ... + 49655.

It is an arithmetic number, because the mean of its divisors is an integer number (9228114).

Almost surely, 2^81050330 is an apocalyptic number.

81050330 is a deficient number, since it is larger than the sum of its proper divisors (66599494).

81050330 is a wasteful number, since it uses less digits than its factorization.

81050330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97741.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 81050330 is about 9002.7956768995. The cubic root of 81050330 is about 432.7644678720.

Adding to 81050330 its reverse (3305018), we get a palindrome (84355348).

The spelling of 81050330 in words is "eighty-one million, fifty thousand, three hundred thirty".