53565516 has 48 divisors (see below), whose sum is σ = 142272480. Its totient is φ = 17418240.

The previous prime is 53565481. The next prime is 53565527. The reversal of 53565516 is 61556535.

53565516 is a `hidden beast` number, since 53 + 56 + 551 + 6 = 666.

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

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 15 ways as a sum of consecutive naturals, for example, 1621 + ... + 10476.

It is an arithmetic number, because the mean of its divisors is an integer number (2964010).

Almost surely, 2^53565516 is an apocalyptic number.

It is an amenable number.

53565516 is an abundant number, since it is smaller than the sum of its proper divisors (88706964).

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

53565516 is a wasteful number, since it uses less digits than its factorization.

53565516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12151 (or 12143 counting only the distinct ones).

The product of its digits is 67500, while the sum is 36.

The square root of 53565516 is about 7318.8466304466. The cubic root of 53565516 is about 376.9598514425.

The spelling of 53565516 in words is "fifty-three million, five hundred sixty-five thousand, five hundred sixteen".