81050592 has 96 divisors (see below), whose sum is σ = 251596800. Its totient is φ = 22353408.

The previous prime is 81050591. The next prime is 81050623. The reversal of 81050592 is 29505018.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81050591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17409 + ... + 21567.

It is an arithmetic number, because the mean of its divisors is an integer number (2620800).

Almost surely, 2^81050592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81050592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125798400).

81050592 is an abundant number, since it is smaller than the sum of its proper divisors (170546208).

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

81050592 is a wasteful number, since it uses less digits than its factorization.

81050592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4208 (or 4200 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 81050592 is about 9002.8102279233. The cubic root of 81050592 is about 432.7649341837.

The spelling of 81050592 in words is "eighty-one million, fifty thousand, five hundred ninety-two".