105063561 has 20 divisors (see below), whose sum is σ = 157791744. Its totient is φ = 69665400.

The previous prime is 105063547. The next prime is 105063593. The reversal of 105063561 is 165360501.

It is a happy number.

It is not a de Polignac number, because 105063561 - 2⁵ = 105063529 is a prime.

It is a super-2 number, since 2×105063561² = 22076703700001442, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (105062561) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12076 + ... + 18866.

Almost surely, 2^105063561 is an apocalyptic number.

It is an amenable number.

105063561 is a deficient number, since it is larger than the sum of its proper divisors (52728183).

105063561 is an equidigital number, since it uses as much as digits as its factorization.

105063561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6994 (or 6985 counting only the distinct ones).

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

The square root of 105063561 is about 10250.0517559669. The cubic root of 105063561 is about 471.8645729082.

The spelling of 105063561 in words is "one hundred five million, sixty-three thousand, five hundred sixty-one".