81035582 has 8 divisors (see below), whose sum is σ = 121688400. Its totient is φ = 40472784.

The previous prime is 81035573. The next prime is 81035597. The reversal of 81035582 is 28553018.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20207 + ... + 23882.

It is an arithmetic number, because the mean of its divisors is an integer number (15211050).

Almost surely, 2^81035582 is an apocalyptic number.

81035582 is a deficient number, since it is larger than the sum of its proper divisors (40652818).

81035582 is a wasteful number, since it uses less digits than its factorization.

81035582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45010.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 81035582 is about 9001.9765607338. The cubic root of 81035582 is about 432.7382175263.

The spelling of 81035582 in words is "eighty-one million, thirty-five thousand, five hundred eighty-two".