245049 has 12 divisors (see below), whose sum is σ = 380304. Its totient is φ = 139944.

The previous prime is 245039. The next prime is 245071. The reversal of 245049 is 940542.

It is not a de Polignac number, because 245049 - 2⁴ = 245033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 687 + ... + 980.

It is an arithmetic number, because the mean of its divisors is an integer number (31692).

2²⁴⁵⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

245049 is a deficient number, since it is larger than the sum of its proper divisors (135255).

245049 is a wasteful number, since it uses less digits than its factorization.

245049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684 (or 1677 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 245049 is about 495.0242418306. The cubic root of 245049 is about 62.5774187285.

Subtracting from 245049 its sum of digits (24), we obtain a square (245025 = 495²).

The spelling of 245049 in words is "two hundred forty-five thousand, forty-nine".