55871709 has 8 divisors (see below), whose sum is σ = 75264000. Its totient is φ = 36863616.

The previous prime is 55871701. The next prime is 55871729. The reversal of 55871709 is 90717855.

55871709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55871709 - 2³ = 55871701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55871701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95709 + ... + 96290.

It is an arithmetic number, because the mean of its divisors is an integer number (9408000).

Almost surely, 2^55871709 is an apocalyptic number.

It is an amenable number.

55871709 is a deficient number, since it is larger than the sum of its proper divisors (19392291).

55871709 is a wasteful number, since it uses less digits than its factorization.

55871709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192099.

The product of its (nonzero) digits is 88200, while the sum is 42.

The square root of 55871709 is about 7474.7380556110. The cubic root of 55871709 is about 382.2938561988.

The spelling of 55871709 in words is "fifty-five million, eight hundred seventy-one thousand, seven hundred nine".