105563281 has 8 divisors (see below), whose sum is σ = 107222400. Its totient is φ = 103916400.

The previous prime is 105563273. The next prime is 105563287. The reversal of 105563281 is 182365501.

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

It is a cyclic number.

It is not a de Polignac number, because 105563281 - 2³ = 105563273 is a prime.

It is a super-2 number, since 2×105563281² = 22287212590969922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105563287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15160 + ... + 20998.

It is an arithmetic number, because the mean of its divisors is an integer number (13402800).

Almost surely, 2^105563281 is an apocalyptic number.

It is an amenable number.

105563281 is a deficient number, since it is larger than the sum of its proper divisors (1659119).

105563281 is a wasteful number, since it uses less digits than its factorization.

105563281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6119.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 105563281 is about 10274.3993011757. The cubic root of 105563281 is about 472.6115090067.

The spelling of 105563281 in words is "one hundred five million, five hundred sixty-three thousand, two hundred eighty-one".