53533566 has 24 divisors (see below), whose sum is σ = 116237160. Its totient is φ = 17806416.

The previous prime is 53533553. The next prime is 53533567. The reversal of 53533566 is 66533535.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53533566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53533567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6241 + ... + 12083.

It is an arithmetic number, because the mean of its divisors is an integer number (4843215).

Almost surely, 2^53533566 is an apocalyptic number.

53533566 is an abundant number, since it is smaller than the sum of its proper divisors (62703594).

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

53533566 is a wasteful number, since it uses less digits than its factorization.

53533566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6360 (or 6357 counting only the distinct ones).

The product of its digits is 121500, while the sum is 36.

The square root of 53533566 is about 7316.6635839022. The cubic root of 53533566 is about 376.8848886459.

The spelling of 53533566 in words is "fifty-three million, five hundred thirty-three thousand, five hundred sixty-six".