55617289551 has 8 divisors (see below), whose sum is σ = 82395984560. Its totient is φ = 37078193016.

The previous prime is 55617289523. The next prime is 55617289601. The reversal of 55617289551 is 15598271655.

55617289551 is a `hidden beast` number, since 5 + 5 + 6 + 1 + 7 + 2 + 89 + 551 = 666.

It is not a de Polignac number, because 55617289551 - 2¹⁰ = 55617288527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55617289151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029949780 + ... + 1029949833.

It is an arithmetic number, because the mean of its divisors is an integer number (10299498070).

Almost surely, 2^55617289551 is an apocalyptic number.

55617289551 is a deficient number, since it is larger than the sum of its proper divisors (26778695009).

55617289551 is a wasteful number, since it uses less digits than its factorization.

55617289551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059899622 (or 2059899616 counting only the distinct ones).

The product of its digits is 3780000, while the sum is 54.

The spelling of 55617289551 in words is "fifty-five billion, six hundred seventeen million, two hundred eighty-nine thousand, five hundred fifty-one".