53538666 has 16 divisors (see below), whose sum is σ = 107150688. Its totient is φ = 17834000.

The previous prime is 53538659. The next prime is 53538671. The reversal of 53538666 is 66683535.

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, 12616 + ... + 16316.

It is an arithmetic number, because the mean of its divisors is an integer number (6696918).

Almost surely, 2^53538666 is an apocalyptic number.

53538666 is an abundant number, since it is smaller than the sum of its proper divisors (53612022).

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

53538666 is a wasteful number, since it uses less digits than its factorization.

53538666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6117.

The product of its digits is 388800, while the sum is 42.

The square root of 53538666 is about 7317.0120951110. The cubic root of 53538666 is about 376.8968565385.

The spelling of 53538666 in words is "fifty-three million, five hundred thirty-eight thousand, six hundred sixty-six".