53616366 has 48 divisors (see below), whose sum is σ = 123027840. Its totient is φ = 16828560.

The previous prime is 53616349. The next prime is 53616379. The reversal of 53616366 is 66361635.

It is a happy number.

53616366 is a `hidden beast` number, since 5 + 3 + 616 + 36 + 6 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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 53616366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71791 + ... + 72533.

It is an arithmetic number, because the mean of its divisors is an integer number (2563080).

Almost surely, 2^53616366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53616366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61513920).

53616366 is an abundant number, since it is smaller than the sum of its proper divisors (69411474).

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

53616366 is a wasteful number, since it uses less digits than its factorization.

53616366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981 (or 978 counting only the distinct ones).

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

The square root of 53616366 is about 7322.3197144074. The cubic root of 53616366 is about 377.0790969790.

The spelling of 53616366 in words is "fifty-three million, six hundred sixteen thousand, three hundred sixty-six".