245213 has 4 divisors (see below), whose sum is σ = 246240. Its totient is φ = 244188.

The previous prime is 245209. The next prime is 245251. The reversal of 245213 is 312542.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 245213 - 2² = 245209 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 245191 and 245200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245513) 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, 56 + ... + 702.

It is an arithmetic number, because the mean of its divisors is an integer number (61560).

2²⁴⁵²¹³ is an apocalyptic number.

It is an amenable number.

245213 is a deficient number, since it is larger than the sum of its proper divisors (1027).

245213 is an equidigital number, since it uses as much as digits as its factorization.

245213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026.

The product of its digits is 240, while the sum is 17.

The square root of 245213 is about 495.1898625780. The cubic root of 245213 is about 62.5913756760.

Adding to 245213 its reverse (312542), we get a palindrome (557755).

The spelling of 245213 in words is "two hundred forty-five thousand, two hundred thirteen".