53171616 has 96 divisors (see below), whose sum is σ = 146966400. Its totient is φ = 16808960.

The previous prime is 53171581. The next prime is 53171621. The reversal of 53171616 is 61617135.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197530 + ... + 197798.

It is an arithmetic number, because the mean of its divisors is an integer number (1530900).

Almost surely, 2^53171616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53171616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73483200).

53171616 is an abundant number, since it is smaller than the sum of its proper divisors (93794784).

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

53171616 is a wasteful number, since it uses less digits than its factorization.

53171616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 374 counting only the distinct ones).

The product of its digits is 3780, while the sum is 30.

The square root of 53171616 is about 7291.8869985759. The cubic root of 53171616 is about 376.0335717723.

The spelling of 53171616 in words is "fifty-three million, one hundred seventy-one thousand, six hundred sixteen".