55171516 has 24 divisors (see below), whose sum is σ = 103556880. Its totient is φ = 25638912.

The previous prime is 55171499. The next prime is 55171531. The reversal of 55171516 is 61517155.

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, 2821 + ... + 10876.

It is an arithmetic number, because the mean of its divisors is an integer number (4314870).

Almost surely, 2^55171516 is an apocalyptic number.

It is an amenable number.

55171516 is a deficient number, since it is larger than the sum of its proper divisors (48385364).

55171516 is a wasteful number, since it uses less digits than its factorization.

55171516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13773 (or 13771 counting only the distinct ones).

The product of its digits is 5250, while the sum is 31.

The square root of 55171516 is about 7427.7530922884. The cubic root of 55171516 is about 380.6901493129.

The spelling of 55171516 in words is "fifty-five million, one hundred seventy-one thousand, five hundred sixteen".