53988066 has 64 divisors (see below), whose sum is σ = 132370560. Its totient is φ = 16174080.

The previous prime is 53988059. The next prime is 53988071. The reversal of 53988066 is 66088935.

It is a super-2 number, since 2×53988066² = 5829422540840712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57150 + ... + 58086.

It is an arithmetic number, because the mean of its divisors is an integer number (2068290).

Almost surely, 2^53988066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53988066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66185280).

53988066 is an abundant number, since it is smaller than the sum of its proper divisors (78382494).

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

53988066 is a wasteful number, since it uses less digits than its factorization.

53988066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 53988066 is about 7347.6571776315. The cubic root of 53988066 is about 377.9484686618.

The spelling of 53988066 in words is "fifty-three million, nine hundred eighty-eight thousand, sixty-six".