81835054 has 16 divisors (see below), whose sum is σ = 141221376. Its totient is φ = 34839000.

The previous prime is 81835049. The next prime is 81835069. The reversal of 81835054 is 45053818.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17242 + ... + 21469.

It is an arithmetic number, because the mean of its divisors is an integer number (8826336).

Almost surely, 2^81835054 is an apocalyptic number.

81835054 is a deficient number, since it is larger than the sum of its proper divisors (59386322).

81835054 is a wasteful number, since it uses less digits than its factorization.

81835054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38871.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 81835054 is about 9046.2729341978. The cubic root of 81835054 is about 434.1566502545.

The spelling of 81835054 in words is "eighty-one million, eight hundred thirty-five thousand, fifty-four".