245023559 has 4 divisors (see below), whose sum is σ = 267298440. Its totient is φ = 222748680.

The previous prime is 245023547. The next prime is 245023591. The reversal of 245023559 is 955320542.

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

It is a de Polignac number, because none of the positive numbers 2^k-245023559 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 (245023529) 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, 11137424 + ... + 11137445.

It is an arithmetic number, because the mean of its divisors is an integer number (66824610).

Almost surely, 2^245023559 is an apocalyptic number.

245023559 is a deficient number, since it is larger than the sum of its proper divisors (22274881).

245023559 is a wasteful number, since it uses less digits than its factorization.

245023559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22274880.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 245023559 is about 15653.2283890576. The cubic root of 245023559 is about 625.7525305661.

The spelling of 245023559 in words is "two hundred forty-five million, twenty-three thousand, five hundred fifty-nine".