53317566 has 24 divisors (see below), whose sum is σ = 115676184. Its totient is φ = 17748720.

The previous prime is 53317543. The next prime is 53317571. The reversal of 53317566 is 66571335.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 53317566.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16461 + ... + 19431.

It is an arithmetic number, because the mean of its divisors is an integer number (4819841).

Almost surely, 2^53317566 is an apocalyptic number.

53317566 is an abundant number, since it is smaller than the sum of its proper divisors (62358618).

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

53317566 is a wasteful number, since it uses less digits than its factorization.

53317566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976 (or 3973 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 53317566 is about 7301.8878380868. The cubic root of 53317566 is about 376.3773138245.

The spelling of 53317566 in words is "fifty-three million, three hundred seventeen thousand, five hundred sixty-six".