245903 has 4 divisors (see below), whose sum is σ = 281040. Its totient is φ = 210768.

The previous prime is 245899. The next prime is 245909. The reversal of 245903 is 309542.

245903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 245903 - 2² = 245899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17558 + ... + 17571.

It is an arithmetic number, because the mean of its divisors is an integer number (70260).

2²⁴⁵⁹⁰³ is an apocalyptic number.

245903 is a deficient number, since it is larger than the sum of its proper divisors (35137).

245903 is an equidigital number, since it uses as much as digits as its factorization.

245903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35136.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 245903 is about 495.8860756262. The cubic root of 245903 is about 62.6500289064.

It can be divided in two parts, 2 and 45903, that multiplied together give a triangular number (91806 = T₄₂₈).

The spelling of 245903 in words is "two hundred forty-five thousand, nine hundred three".