105556145 has 16 divisors (see below), whose sum is σ = 135360720. Its totient is φ = 78741504.

The previous prime is 105556141. The next prime is 105556159. The reversal of 105556145 is 541655501.

It can be written as a sum of positive squares in 8 ways, for example, as 9535744 + 96020401 = 3088^2 + 9799^2 .

It is a cyclic number.

It is not a de Polignac number, because 105556145 - 2² = 105556141 is a prime.

It is a super-2 number, since 2×105556145² = 22284199494522050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105556141) 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, 3569 + ... + 14961.

It is an arithmetic number, because the mean of its divisors is an integer number (8460045).

Almost surely, 2^105556145 is an apocalyptic number.

It is an amenable number.

105556145 is a deficient number, since it is larger than the sum of its proper divisors (29804575).

105556145 is a wasteful number, since it uses less digits than its factorization.

105556145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11524.

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 105556145 is about 10274.0520243962. The cubic root of 105556145 is about 472.6008593702.

The spelling of 105556145 in words is "one hundred five million, five hundred fifty-six thousand, one hundred forty-five".