8161056 has 72 divisors (see below), whose sum is σ = 23783760. Its totient is φ = 2653056.

The previous prime is 8161039. The next prime is 8161063. The reversal of 8161056 is 6501618.

It is a tau number, because it is divible by the number of its divisors (72).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12055 + ... + 12713.

It is an arithmetic number, because the mean of its divisors is an integer number (330330).

Almost surely, 2^8161056 is an apocalyptic number.

8161056 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8161056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11891880).

8161056 is an abundant number, since it is smaller than the sum of its proper divisors (15622704).

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

8161056 is a wasteful number, since it uses less digits than its factorization.

8161056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 8161056 is about 2856.7562024086. The cubic root of 8161056 is about 201.3332261255. Note that the first 3 decimals are identical.

The spelling of 8161056 in words is "eight million, one hundred sixty-one thousand, fifty-six".