81835052 has 48 divisors (see below), whose sum is σ = 164004960. Its totient is φ = 35417088.

The previous prime is 81835049. The next prime is 81835069. The reversal of 81835052 is 25053818.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111278 + ... + 112010.

It is an arithmetic number, because the mean of its divisors is an integer number (3416770).

Almost surely, 2^81835052 is an apocalyptic number.

It is an amenable number.

81835052 is an abundant number, since it is smaller than the sum of its proper divisors (82169908).

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

81835052 is a wasteful number, since it uses less digits than its factorization.

81835052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 880 counting only the distinct ones).

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

The square root of 81835052 is about 9046.2728236551. The cubic root of 81835052 is about 434.1566467176.

The spelling of 81835052 in words is "eighty-one million, eight hundred thirty-five thousand, fifty-two".