245115 has 24 divisors (see below), whose sum is σ = 458640. Its totient is φ = 120384.

The previous prime is 245107. The next prime is 245129. The reversal of 245115 is 511542.

It is not a de Polignac number, because 245115 - 2³ = 245107 is a prime.

It is an Ulam number.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376 + ... + 794.

It is an arithmetic number, because the mean of its divisors is an integer number (19110).

2²⁴⁵¹¹⁵ is an apocalyptic number.

245115 is a deficient number, since it is larger than the sum of its proper divisors (213525).

245115 is a wasteful number, since it uses less digits than its factorization.

245115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 440 counting only the distinct ones).

The product of its digits is 200, while the sum is 18.

The square root of 245115 is about 495.0909007445. The cubic root of 245115 is about 62.5830362974.

Adding to 245115 its reverse (511542), we get a palindrome (756657).

It can be divided in two parts, 24 and 5115, that multiplied together give a triangular number (122760 = T₄₉₅).

The spelling of 245115 in words is "two hundred forty-five thousand, one hundred fifteen".