55863808831 has 4 divisors (see below), whose sum is σ = 55869367000. Its totient is φ = 55858250664.

The previous prime is 55863808823. The next prime is 55863808853. The reversal of 55863808831 is 13880836855.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55863808831 - 2³ = 55863808823 is a prime.

It is a super-3 number, since 3×55863808831³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55863808811) 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 3 ways as a sum of consecutive naturals, for example, 2763981 + ... + 2784118.

It is an arithmetic number, because the mean of its divisors is an integer number (13967341750).

Almost surely, 2^55863808831 is an apocalyptic number.

55863808831 is a deficient number, since it is larger than the sum of its proper divisors (5558169).

55863808831 is a wasteful number, since it uses less digits than its factorization.

55863808831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5558168.

The product of its (nonzero) digits is 5529600, while the sum is 55.

The spelling of 55863808831 in words is "fifty-five billion, eight hundred sixty-three million, eight hundred eight thousand, eight hundred thirty-one".