245189 has 4 divisors (see below), whose sum is σ = 280224. Its totient is φ = 210156.

The previous prime is 245183. The next prime is 245209. The reversal of 245189 is 981542.

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, and also an emirpimes, since its reverse is a distinct semiprime: 981542 = 2 ⋅490771.

It is a cyclic number.

It is not a de Polignac number, because 245189 - 2⁴ = 245173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245183) 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, 17507 + ... + 17520.

It is an arithmetic number, because the mean of its divisors is an integer number (70056).

2²⁴⁵¹⁸⁹ is an apocalyptic number.

It is an amenable number.

245189 is a deficient number, since it is larger than the sum of its proper divisors (35035).

245189 is an equidigital number, since it uses as much as digits as its factorization.

245189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35034.

The product of its digits is 2880, while the sum is 29.

The square root of 245189 is about 495.1656288556. The cubic root of 245189 is about 62.5893335847.

It can be divided in two parts, 245 and 189, that added together give a palindrome (434).

The spelling of 245189 in words is "two hundred forty-five thousand, one hundred eighty-nine".