245608549 has 4 divisors (see below), whose sum is σ = 247904064. Its totient is φ = 243313036.

The previous prime is 245608541. The next prime is 245608577. The reversal of 245608549 is 945806542.

245608549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 245608549 - 2³ = 245608541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245608541) 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, 1147597 + ... + 1147810.

It is an arithmetic number, because the mean of its divisors is an integer number (61976016).

Almost surely, 2^245608549 is an apocalyptic number.

It is an amenable number.

245608549 is a deficient number, since it is larger than the sum of its proper divisors (2295515).

245608549 is a wasteful number, since it uses less digits than its factorization.

245608549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295514.

The product of its (nonzero) digits is 345600, while the sum is 43.

The square root of 245608549 is about 15671.9031709617. The cubic root of 245608549 is about 626.2501263076.

The spelling of 245608549 in words is "two hundred forty-five million, six hundred eight thousand, five hundred forty-nine".