81007353 has 48 divisors (see below), whose sum is σ = 140025600. Its totient is φ = 44150400.

The previous prime is 81007351. The next prime is 81007361. The reversal of 81007353 is 35370018.

It is not a de Polignac number, because 81007353 - 2¹ = 81007351 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (81007351) 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 47 ways as a sum of consecutive naturals, for example, 184308 + ... + 184746.

It is an arithmetic number, because the mean of its divisors is an integer number (2917200).

Almost surely, 2^81007353 is an apocalyptic number.

It is an amenable number.

81007353 is a deficient number, since it is larger than the sum of its proper divisors (59018247).

81007353 is a wasteful number, since it uses less digits than its factorization.

81007353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 81007353 is about 9000.4084907297. The cubic root of 81007353 is about 432.6879631172.

The spelling of 81007353 in words is "eighty-one million, seven thousand, three hundred fifty-three".