81054177 has 8 divisors (see below), whose sum is σ = 109844160. Its totient is φ = 53150160.

The previous prime is 81054157. The next prime is 81054187. The reversal of 81054177 is 77145018.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 81054177 - 2⁷ = 81054049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81054137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221277 + ... + 221642.

It is an arithmetic number, because the mean of its divisors is an integer number (13730520).

Almost surely, 2^81054177 is an apocalyptic number.

It is an amenable number.

81054177 is a deficient number, since it is larger than the sum of its proper divisors (28789983).

81054177 is a wasteful number, since it uses less digits than its factorization.

81054177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442983.

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 81054177 is about 9003.0093302184. The cubic root of 81054177 is about 432.7713147228.

The spelling of 81054177 in words is "eighty-one million, fifty-four thousand, one hundred seventy-seven".