55610561589 has 8 divisors (see below), whose sum is σ = 80888089632. Its totient is φ = 33703370640.

The previous prime is 55610561549. The next prime is 55610561593. The reversal of 55610561589 is 98516501655.

It is a happy number.

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

It is not a de Polignac number, because 55610561589 - 2²⁷ = 55476343861 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55610561509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 842584234 + ... + 842584299.

It is an arithmetic number, because the mean of its divisors is an integer number (10111011204).

Almost surely, 2^55610561589 is an apocalyptic number.

It is an amenable number.

55610561589 is a deficient number, since it is larger than the sum of its proper divisors (25277528043).

55610561589 is a wasteful number, since it uses less digits than its factorization.

55610561589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685168547.

The product of its (nonzero) digits is 1620000, while the sum is 51.

The spelling of 55610561589 in words is "fifty-five billion, six hundred ten million, five hundred sixty-one thousand, five hundred eighty-nine".