53166636 has 54 divisors (see below), whose sum is σ = 141873732. Its totient is φ = 16785360.

The previous prime is 53166629. The next prime is 53166649. The reversal of 53166636 is 63666135.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 53166636.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10951 + ... + 15041.

Almost surely, 2^53166636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53166636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70936866).

53166636 is an abundant number, since it is smaller than the sum of its proper divisors (88707096).

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

53166636 is a wasteful number, since it uses less digits than its factorization.

53166636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139 (or 4115 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 53166636 is about 7291.5455151840. The cubic root of 53166636 is about 376.0218317639.

The spelling of 53166636 in words is "fifty-three million, one hundred sixty-six thousand, six hundred thirty-six".