559498991 has 4 divisors (see below), whose sum is σ = 559594272. Its totient is φ = 559403712.

The previous prime is 559498981. The next prime is 559498993. The reversal of 559498991 is 199894955.

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-559498991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 559498991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (559498993) 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, 38210 + ... + 50783.

It is an arithmetic number, because the mean of its divisors is an integer number (139898568).

Almost surely, 2^559498991 is an apocalyptic number.

559498991 is a deficient number, since it is larger than the sum of its proper divisors (95281).

559498991 is an equidigital number, since it uses as much as digits as its factorization.

559498991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95280.

The product of its digits is 5248800, while the sum is 59.

The square root of 559498991 is about 23653.7310164803. The cubic root of 559498991 is about 824.0111769739.

The spelling of 559498991 in words is "five hundred fifty-nine million, four hundred ninety-eight thousand, nine hundred ninety-one".