105555545 has 16 divisors (see below), whose sum is σ = 133920000. Its totient is φ = 79648128.

The previous prime is 105555509. The next prime is 105555547. The reversal of 105555545 is 545555501.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 105555545 - 2⁶ = 105555481 is a prime.

It is a super-2 number, since 2×105555545² = 22283946160494050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105555547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20381 + ... + 25029.

It is an arithmetic number, because the mean of its divisors is an integer number (8370000).

Almost surely, 2^105555545 is an apocalyptic number.

It is an amenable number.

105555545 is a deficient number, since it is larger than the sum of its proper divisors (28364455).

105555545 is a wasteful number, since it uses less digits than its factorization.

105555545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4912.

The product of its (nonzero) digits is 62500, while the sum is 35.

The square root of 105555545 is about 10274.0228245804. The cubic root of 105555545 is about 472.5999639192.

It can be divided in two parts, 10 and 5555545, that added together give a palindrome (5555555).

The spelling of 105555545 in words is "one hundred five million, five hundred fifty-five thousand, five hundred forty-five".