245980559 has 4 divisors (see below), whose sum is σ = 268342440. Its totient is φ = 223618680.

The previous prime is 245980549. The next prime is 245980573. The reversal of 245980559 is 955089542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245980559 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 (245980549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11180924 + ... + 11180945.

It is an arithmetic number, because the mean of its divisors is an integer number (67085610).

Almost surely, 2^245980559 is an apocalyptic number.

245980559 is a deficient number, since it is larger than the sum of its proper divisors (22361881).

245980559 is a wasteful number, since it uses less digits than its factorization.

245980559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22361880.

The product of its (nonzero) digits is 648000, while the sum is 47.

The square root of 245980559 is about 15683.7673726691. The cubic root of 245980559 is about 626.5661492179.

The spelling of 245980559 in words is "two hundred forty-five million, nine hundred eighty thousand, five hundred fifty-nine".