55871509000 has 32 divisors (see below), whose sum is σ = 130739333400. Its totient is φ = 22348603200.

The previous prime is 55871508991. The next prime is 55871509049. The reversal of 55871509000 is 90517855.

It can be written as a sum of positive squares in 4 ways, for example, as 23664899556 + 32206609444 = 153834^2 + 179462^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27934755 + ... + 27936754.

Almost surely, 2^55871509000 is an apocalyptic number.

55871509000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55871509000 is an abundant number, since it is smaller than the sum of its proper divisors (74867824400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55871509000 is a wasteful number, since it uses less digits than its factorization.

55871509000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55871530 (or 55871516 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 40.

The spelling of 55871509000 in words is "fifty-five billion, eight hundred seventy-one million, five hundred nine thousand".