245215 has 4 divisors (see below), whose sum is σ = 294264. Its totient is φ = 196168.

The previous prime is 245209. The next prime is 245251. The reversal of 245215 is 512542.

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 245215 - 2⁵ = 245183 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 = 245192 and 245201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24517 + ... + 24526.

It is an arithmetic number, because the mean of its divisors is an integer number (73566).

2²⁴⁵²¹⁵ is an apocalyptic number.

245215 is a deficient number, since it is larger than the sum of its proper divisors (49049).

245215 is an equidigital number, since it uses as much as digits as its factorization.

245215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49048.

The product of its digits is 400, while the sum is 19.

The square root of 245215 is about 495.1918820013. The cubic root of 245215 is about 62.5915458443.

Adding to 245215 its reverse (512542), we get a palindrome (757757).

The spelling of 245215 in words is "two hundred forty-five thousand, two hundred fifteen".