555243661 has 8 divisors (see below), whose sum is σ = 635060160. Its totient is φ = 475551168.

The previous prime is 555243653. The next prime is 555243671. The reversal of 555243661 is 166342555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 555243661 - 2³ = 555243653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 555243661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555243671) 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 7 ways as a sum of consecutive naturals, for example, 21196 + ... + 39493.

It is an arithmetic number, because the mean of its divisors is an integer number (79382520).

Almost surely, 2^555243661 is an apocalyptic number.

It is an amenable number.

555243661 is a deficient number, since it is larger than the sum of its proper divisors (79816499).

555243661 is a wasteful number, since it uses less digits than its factorization.

555243661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62003.

The product of its digits is 108000, while the sum is 37.

The square root of 555243661 is about 23563.6088280212. The cubic root of 555243661 is about 821.9168230217.

The spelling of 555243661 in words is "five hundred fifty-five million, two hundred forty-three thousand, six hundred sixty-one".