245489 has 4 divisors (see below), whose sum is σ = 253440. Its totient is φ = 237540.

The previous prime is 245477. The next prime is 245501. The reversal of 245489 is 984542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (245477) and next prime (245501).

It is a cyclic number.

It is not a de Polignac number, because 245489 - 2⁴ = 245473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245419) 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, 3929 + ... + 3990.

It is an arithmetic number, because the mean of its divisors is an integer number (63360).

2²⁴⁵⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

245489 is a deficient number, since it is larger than the sum of its proper divisors (7951).

245489 is an equidigital number, since it uses as much as digits as its factorization.

245489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7950.

The product of its digits is 11520, while the sum is 32.

The square root of 245489 is about 495.4684651923. The cubic root of 245489 is about 62.6148501551.

It can be divided in two parts, 245 and 489, that multiplied together give a triangular number (119805 = T₄₈₉).

The spelling of 245489 in words is "two hundred forty-five thousand, four hundred eighty-nine".