81276854 has 16 divisors (see below), whose sum is σ = 126821376. Its totient is φ = 39023400.

The previous prime is 81276841. The next prime is 81276863. The reversal of 81276854 is 45867218.

It is a super-2 number, since 2×81276854² = 13211853992274632, which contains 22 as substring.

It is a Curzon number.

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, 3119 + ... + 13125.

It is an arithmetic number, because the mean of its divisors is an integer number (7926336).

Almost surely, 2^81276854 is an apocalyptic number.

81276854 is a deficient number, since it is larger than the sum of its proper divisors (45544522).

81276854 is a wasteful number, since it uses less digits than its factorization.

81276854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10171.

The product of its digits is 107520, while the sum is 41.

The square root of 81276854 is about 9015.3676575057. The cubic root of 81276854 is about 433.1672643066.

The spelling of 81276854 in words is "eighty-one million, two hundred seventy-six thousand, eight hundred fifty-four".