105557881 has 16 divisors (see below), whose sum is σ = 124407360. Its totient is φ = 88297920.

The previous prime is 105557849. The next prime is 105557923. The reversal of 105557881 is 188755501.

It is a cyclic number.

It is not a de Polignac number, because 105557881 - 2⁵ = 105557849 is a prime.

It is a super-2 number, since 2×105557881² = 22284932482420322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105557801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52350 + ... + 54328.

It is an arithmetic number, because the mean of its divisors is an integer number (7775460).

Almost surely, 2^105557881 is an apocalyptic number.

105557881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

105557881 is a deficient number, since it is larger than the sum of its proper divisors (18849479).

105557881 is a wasteful number, since it uses less digits than its factorization.

105557881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376.

The product of its (nonzero) digits is 56000, while the sum is 40.

The square root of 105557881 is about 10274.1365087291. The cubic root of 105557881 is about 472.6034501892.

The spelling of 105557881 in words is "one hundred five million, five hundred fifty-seven thousand, eight hundred eighty-one".