245916589 has 4 divisors (see below), whose sum is σ = 248092956. Its totient is φ = 243740224.

The previous prime is 245916569. The next prime is 245916617. The reversal of 245916589 is 985619542.

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

It can be written as a sum of positive squares in 2 ways, for example, as 106440489 + 139476100 = 10317^2 + 11810^2 .

It is a cyclic number.

It is not a de Polignac number, because 245916589 - 2¹⁵ = 245883821 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 (245916569) 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, 1088014 + ... + 1088239.

It is an arithmetic number, because the mean of its divisors is an integer number (62023239).

Almost surely, 2^245916589 is an apocalyptic number.

It is an amenable number.

245916589 is a deficient number, since it is larger than the sum of its proper divisors (2176367).

245916589 is a wasteful number, since it uses less digits than its factorization.

245916589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176366.

The product of its digits is 777600, while the sum is 49.

The square root of 245916589 is about 15681.7278703592. The cubic root of 245916589 is about 626.5118293267.

The spelling of 245916589 in words is "two hundred forty-five million, nine hundred sixteen thousand, five hundred eighty-nine".