105644545 has 16 divisors (see below), whose sum is σ = 134496720. Its totient is φ = 79386624.

The previous prime is 105644537. The next prime is 105644551. The reversal of 105644545 is 545446501.

It can be written as a sum of positive squares in 8 ways, for example, as 18931201 + 86713344 = 4351^2 + 9312^2 .

It is a cyclic number.

It is not a de Polignac number, because 105644545 - 2³ = 105644537 is a prime.

It is a super-2 number, since 2×105644545² = 22321539776514050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105644545.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59389 + ... + 61141.

It is an arithmetic number, because the mean of its divisors is an integer number (8406045).

Almost surely, 2^105644545 is an apocalyptic number.

It is an amenable number.

105644545 is a deficient number, since it is larger than the sum of its proper divisors (28852175).

105644545 is a wasteful number, since it uses less digits than its factorization.

105644545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484.

The product of its (nonzero) digits is 48000, while the sum is 34.

The square root of 105644545 is about 10278.3532241308. The cubic root of 105644545 is about 472.7327520826.

The spelling of 105644545 in words is "one hundred five million, six hundred forty-four thousand, five hundred forty-five".