55520388677 has 16 divisors (see below), whose sum is σ = 60621435840. Its totient is φ = 50541691392.

The previous prime is 55520388667. The next prime is 55520388751. The reversal of 55520388677 is 77688302555.

It is a cyclic number.

It is not a de Polignac number, because 55520388677 - 2¹⁰ = 55520387653 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 (55520388667) 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 15 ways as a sum of consecutive naturals, for example, 279074 + ... + 434652.

It is an arithmetic number, because the mean of its divisors is an integer number (3788839740).

Almost surely, 2^55520388677 is an apocalyptic number.

It is an amenable number.

55520388677 is a deficient number, since it is larger than the sum of its proper divisors (5101047163).

55520388677 is a wasteful number, since it uses less digits than its factorization.

55520388677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155972.

The product of its (nonzero) digits is 14112000, while the sum is 56.

The spelling of 55520388677 in words is "fifty-five billion, five hundred twenty million, three hundred eighty-eight thousand, six hundred seventy-seven".