81034501 has 8 divisors (see below), whose sum is σ = 82401408. Its totient is φ = 79674000.

The previous prime is 81034469. The next prime is 81034507. The reversal of 81034501 is 10543018.

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 81034501 - 2⁵ = 81034469 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81034507) 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, 28536 + ... + 31246.

It is an arithmetic number, because the mean of its divisors is an integer number (10300176).

Almost surely, 2^81034501 is an apocalyptic number.

It is an amenable number.

81034501 is a deficient number, since it is larger than the sum of its proper divisors (1366907).

81034501 is a wasteful number, since it uses less digits than its factorization.

81034501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 81034501 is about 9001.9165181643. The cubic root of 81034501 is about 432.7362933013.

Adding to 81034501 its reverse (10543018), we get a palindrome (91577519).

The spelling of 81034501 in words is "eighty-one million, thirty-four thousand, five hundred one".