245105 has 16 divisors (see below), whose sum is σ = 345600. Its totient is φ = 163392.

The previous prime is 245087. The next prime is 245107. The reversal of 245105 is 501542.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245105 is a prime.

It is a super-2 number, since 2×245105² = 120152922050, which contains 22 as substring.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (245107) 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, 1571 + ... + 1719.

It is an arithmetic number, because the mean of its divisors is an integer number (21600).

2²⁴⁵¹⁰⁵ is an apocalyptic number.

It is an amenable number.

245105 is a deficient number, since it is larger than the sum of its proper divisors (100495).

245105 is a wasteful number, since it uses less digits than its factorization.

245105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 245105 is about 495.0808014860. The cubic root of 245105 is about 62.5821852154.

Adding to 245105 its reverse (501542), we get a palindrome (746647).

The spelling of 245105 in words is "two hundred forty-five thousand, one hundred five".