81053006 has 16 divisors (see below), whose sum is σ = 125166384. Its totient is φ = 39346944.

The previous prime is 81052997. The next prime is 81053017. The reversal of 81053006 is 60035018.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 6341 + ... + 14223.

It is an arithmetic number, because the mean of its divisors is an integer number (7822899).

Almost surely, 2^81053006 is an apocalyptic number.

81053006 is a deficient number, since it is larger than the sum of its proper divisors (44113378).

81053006 is a wasteful number, since it uses less digits than its factorization.

81053006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8035.

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

The square root of 81053006 is about 9002.9442961733. The cubic root of 81053006 is about 432.7692306121.

It can be divided in two parts, 8105 and 3006, that added together give a palindrome (11111).

The spelling of 81053006 in words is "eighty-one million, fifty-three thousand, six".