105281945 has 16 divisors (see below), whose sum is σ = 133680000. Its totient is φ = 79377408.

The previous prime is 105281941. The next prime is 105281963. The reversal of 105281945 is 549182501.

It is a cyclic number.

It is not a de Polignac number, because 105281945 - 2² = 105281941 is a prime.

It is a super-2 number, since 2×105281945² = 22168575885966050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105281941) 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, 16121 + ... + 21689.

It is an arithmetic number, because the mean of its divisors is an integer number (8355000).

Almost surely, 2^105281945 is an apocalyptic number.

It is an amenable number.

105281945 is a deficient number, since it is larger than the sum of its proper divisors (28398055).

105281945 is a wasteful number, since it uses less digits than its factorization.

105281945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5792.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 105281945 is about 10260.6990502597. The cubic root of 105281945 is about 472.1912842066.

The spelling of 105281945 in words is "one hundred five million, two hundred eighty-one thousand, nine hundred forty-five".