559973561 has 4 divisors (see below), whose sum is σ = 639969792. Its totient is φ = 479977332.

The previous prime is 559973537. The next prime is 559973581. The reversal of 559973561 is 165379955.

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 559973561 - 2⁶ = 559973497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (559973581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39998105 + ... + 39998118.

It is an arithmetic number, because the mean of its divisors is an integer number (159992448).

Almost surely, 2^559973561 is an apocalyptic number.

It is an amenable number.

559973561 is a deficient number, since it is larger than the sum of its proper divisors (79996231).

559973561 is an equidigital number, since it uses as much as digits as its factorization.

559973561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79996230.

The product of its digits is 1275750, while the sum is 50.

The square root of 559973561 is about 23663.7604999713. The cubic root of 559973561 is about 824.2440880121.

It can be divided in two parts, 5 and 59973561, that multiplied together give a triangular number (299867805 = T₂₄₄₈₉).

The spelling of 559973561 in words is "five hundred fifty-nine million, nine hundred seventy-three thousand, five hundred sixty-one".