81050 has 12 divisors (see below), whose sum is σ = 150846. Its totient is φ = 32400.

The previous prime is 81049. The next prime is 81071. The reversal of 81050 is 5018.

It can be written as a sum of positive squares in 3 ways, for example, as 69169 + 11881 = 263^2 + 109^2 .

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 761 + ... + 860.

2⁸¹⁰⁵⁰ is an apocalyptic number.

81050 is a deficient number, since it is larger than the sum of its proper divisors (69796).

81050 is a wasteful number, since it uses less digits than its factorization.

81050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633 (or 1628 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 81050 is about 284.6928169097. The cubic root of 81050 is about 43.2763880531.

Adding to 81050 its reverse (5018), we get a palindrome (86068).

The spelling of 81050 in words is "eighty-one thousand, fifty".