555573643 has 4 divisors (see below), whose sum is σ = 555708528. Its totient is φ = 555438760.

The previous prime is 555573607. The next prime is 555573713. The reversal of 555573643 is 346375555.

It is a happy number.

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-555573643 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 555573643.

It is not an unprimeable number, because it can be changed into a prime (555573443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61063 + ... + 69568.

It is an arithmetic number, because the mean of its divisors is an integer number (138927132).

Almost surely, 2^555573643 is an apocalyptic number.

555573643 is a deficient number, since it is larger than the sum of its proper divisors (134885).

555573643 is a wasteful number, since it uses less digits than its factorization.

555573643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134884.

The product of its digits is 945000, while the sum is 43.

The square root of 555573643 is about 23570.6097290673. The cubic root of 555573643 is about 822.0796128414.

The spelling of 555573643 in words is "five hundred fifty-five million, five hundred seventy-three thousand, six hundred forty-three".