53171660 has 12 divisors (see below), whose sum is σ = 111660528. Its totient is φ = 21268656.

The previous prime is 53171659. The next prime is 53171681. The reversal of 53171660 is 6617135.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1329272 + ... + 1329311.

It is an arithmetic number, because the mean of its divisors is an integer number (9305044).

Almost surely, 2^53171660 is an apocalyptic number.

It is an amenable number.

53171660 is an abundant number, since it is smaller than the sum of its proper divisors (58488868).

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

53171660 is a wasteful number, since it uses less digits than its factorization.

53171660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658592 (or 2658590 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 53171660 is about 7291.8900156269. The cubic root of 53171660 is about 376.0336754960.

Adding to 53171660 its reverse (6617135), we get a palindrome (59788795).

The spelling of 53171660 in words is "fifty-three million, one hundred seventy-one thousand, six hundred sixty".