81046353 has 8 divisors (see below), whose sum is σ = 109893600.
Its totient is φ = 53115008.
The previous prime is 81046351. The next prime is 81046363. The reversal of 81046353 is 35364018.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 81046353 - 21 = 81046351 is a prime.
It is a super-2 number, since 2×810463532 = 13137022669201218, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 81046353.
It is not an unprimeable number, because it can be changed into a prime (81046351) by changing a digit.
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, 228768 + ... + 229121.
It is an arithmetic number, because the mean of its divisors is an integer number (13736700).
Almost surely, 281046353 is an apocalyptic number.
It is an amenable number.
81046353 is a deficient number, since it is larger than the sum of its proper divisors (28847247).
81046353 is a wasteful number, since it uses less digits than its factorization.
81046353 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 457951.
The product of its (nonzero) digits is 8640, while the sum is 30.
The square root of 81046353 is about 9002.5747983563.
The cubic root of 81046353 is about 432.7573894207.
The spelling of 81046353 in words is "eighty-one million, forty-six thousand, three hundred fifty-three".