55171680 has 48 divisors (see below), whose sum is σ = 173792304. Its totient is φ = 14712320.

The previous prime is 55171679. The next prime is 55171747. The reversal of 55171680 is 8617155.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 56991 + ... + 57950.

It is an arithmetic number, because the mean of its divisors is an integer number (3620673).

Almost surely, 2^55171680 is an apocalyptic number.

It is an amenable number.

55171680 is an abundant number, since it is smaller than the sum of its proper divisors (118620624).

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

55171680 is a wasteful number, since it uses less digits than its factorization.

55171680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114959 (or 114951 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 55171680 is about 7427.7641319579. The cubic root of 55171680 is about 380.6905265192.

The spelling of 55171680 in words is "fifty-five million, one hundred seventy-one thousand, six hundred eighty".