245099 has 4 divisors (see below), whose sum is σ = 248136. Its totient is φ = 242064.

The previous prime is 245087. The next prime is 245107. The reversal of 245099 is 990542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245099 - 2⁴ = 245083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245029) 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 3 ways as a sum of consecutive naturals, for example, 1394 + ... + 1559.

It is an arithmetic number, because the mean of its divisors is an integer number (62034).

2²⁴⁵⁰⁹⁹ is an apocalyptic number.

245099 is a deficient number, since it is larger than the sum of its proper divisors (3037).

245099 is an equidigital number, since it uses as much as digits as its factorization.

245099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 245099 is about 495.0747418320. The cubic root of 245099 is about 62.5816745551.

The spelling of 245099 in words is "two hundred forty-five thousand, ninety-nine".