105561063 has 10 divisors (see below), whose sum is σ = 157690104. Its totient is φ = 70373988.

The previous prime is 105561061. The next prime is 105561067. The reversal of 105561063 is 360165501.

It is a happy number.

105561063 is a `hidden beast` number, since 1 + 0 + 556 + 106 + 3 = 666.

It is not a de Polignac number, because 105561063 - 2¹ = 105561061 is a prime.

It is a super-2 number, since 2×105561063² = 22286276043379938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105561061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 651531 + ... + 651692.

Almost surely, 2^105561063 is an apocalyptic number.

105561063 is a deficient number, since it is larger than the sum of its proper divisors (52129041).

105561063 is an equidigital number, since it uses as much as digits as its factorization.

105561063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303235 (or 1303226 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 105561063 is about 10274.2913624250. The cubic root of 105561063 is about 472.6081989553.

The spelling of 105561063 in words is "one hundred five million, five hundred sixty-one thousand, sixty-three".