105078945 has 16 divisors (see below), whose sum is σ = 168285312. Its totient is φ = 55989120.

The previous prime is 105078923. The next prime is 105078947. The reversal of 105078945 is 549870501.

It is not a de Polignac number, because 105078945 - 2⁸ = 105078689 is a prime.

It is a super-2 number, since 2×105078945² = 22083169364626050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (105078947) 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, 17164 + ... + 22466.

It is an arithmetic number, because the mean of its divisors is an integer number (10517832).

Almost surely, 2^105078945 is an apocalyptic number.

105078945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

105078945 is a deficient number, since it is larger than the sum of its proper divisors (63206367).

105078945 is a wasteful number, since it uses less digits than its factorization.

105078945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6632.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 105078945 is about 10250.8021637333. The cubic root of 105078945 is about 471.8876028095.

The spelling of 105078945 in words is "one hundred five million, seventy-eight thousand, nine hundred forty-five".