81104502 has 64 divisors (see below), whose sum is σ = 176774400. Its totient is φ = 24727680.

The previous prime is 81104489. The next prime is 81104537. The reversal of 81104502 is 20540118.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 744024 + ... + 744132.

It is an arithmetic number, because the mean of its divisors is an integer number (2762100).

Almost surely, 2^81104502 is an apocalyptic number.

81104502 is an abundant number, since it is smaller than the sum of its proper divisors (95669898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81104502 is a wasteful number, since it uses less digits than its factorization.

81104502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 81104502 is about 9005.8037953311. The cubic root of 81104502 is about 432.8608626908.

The spelling of 81104502 in words is "eighty-one million, one hundred four thousand, five hundred two".