53553276 has 72 divisors (see below), whose sum is σ = 157903200. Its totient is φ = 15297408.

The previous prime is 53553271. The next prime is 53553287. The reversal of 53553276 is 67235535.

53553276 is a `hidden beast` number, since 53 + 5 + 532 + 76 = 666.

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 53553276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53553271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10180 + ... + 14516.

It is an arithmetic number, because the mean of its divisors is an integer number (2193100).

Almost surely, 2^53553276 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 53553276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78951600).

53553276 is an abundant number, since it is smaller than the sum of its proper divisors (104349924).

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

53553276 is a wasteful number, since it uses less digits than its factorization.

53553276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4368 (or 4349 counting only the distinct ones).

The product of its digits is 94500, while the sum is 36.

The square root of 53553276 is about 7318.0103853438. The cubic root of 53553276 is about 376.9311368240.

The spelling of 53553276 in words is "fifty-three million, five hundred fifty-three thousand, two hundred seventy-six".