81134801 has 8 divisors (see below), whose sum is σ = 88624704. Its totient is φ = 73663920.

The previous prime is 81134797. The next prime is 81134813. The reversal of 81134801 is 10843118.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 81134801 - 2² = 81134797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81134101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5060 + ... + 13706.

It is an arithmetic number, because the mean of its divisors is an integer number (11078088).

Almost surely, 2^81134801 is an apocalyptic number.

It is an amenable number.

81134801 is a deficient number, since it is larger than the sum of its proper divisors (7489903).

81134801 is a wasteful number, since it uses less digits than its factorization.

81134801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9511.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 81134801 is about 9007.4858312406. The cubic root of 81134801 is about 432.9147586649.

Adding to 81134801 its reverse (10843118), we get a palindrome (91977919).

The spelling of 81134801 in words is "eighty-one million, one hundred thirty-four thousand, eight hundred one".