81852854 has 8 divisors (see below), whose sum is σ = 122901240. Its totient is φ = 40885776.

The previous prime is 81852839. The next prime is 81852863. The reversal of 81852854 is 45825818.

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, 17744 + ... + 21875.

It is an arithmetic number, because the mean of its divisors is an integer number (15362655).

Almost surely, 2^81852854 is an apocalyptic number.

81852854 is a deficient number, since it is larger than the sum of its proper divisors (41048386).

81852854 is a wasteful number, since it uses less digits than its factorization.

81852854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40654.

The product of its digits is 102400, while the sum is 41.

The square root of 81852854 is about 9047.2567112910. The cubic root of 81852854 is about 434.1881258783.

The spelling of 81852854 in words is "eighty-one million, eight hundred fifty-two thousand, eight hundred fifty-four".