81036050 has 24 divisors (see below), whose sum is σ = 152120100. Its totient is φ = 32114880.

The previous prime is 81036047. The next prime is 81036071. The reversal of 81036050 is 5063018.

It can be written as a sum of positive squares in 6 ways, for example, as 26142769 + 54893281 = 5113^2 + 7409^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1985 + ... + 12884.

Almost surely, 2^81036050 is an apocalyptic number.

81036050 is a deficient number, since it is larger than the sum of its proper divisors (71084050).

81036050 is a wasteful number, since it uses less digits than its factorization.

81036050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14990 (or 14985 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 81036050 is about 9002.0025549874. The cubic root of 81036050 is about 432.7390505805.

Adding to 81036050 its reverse (5063018), we get a palindrome (86099068).

The spelling of 81036050 in words is "eighty-one million, thirty-six thousand, fifty".