53765556 has 48 divisors (see below), whose sum is σ = 137996544. Its totient is φ = 16189056.

The previous prime is 53765549. The next prime is 53765561. The reversal of 53765556 is 65556735.

It is a happy number.

53765556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3666 + ... + 10998.

It is an arithmetic number, because the mean of its divisors is an integer number (2874928).

Almost surely, 2^53765556 is an apocalyptic number.

It is a pronic number, being equal to 7332×7333.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53765556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68998272).

53765556 is an abundant number, since it is smaller than the sum of its proper divisors (84230988).

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

53765556 is a wasteful number, since it uses less digits than its factorization.

53765556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7400 (or 7398 counting only the distinct ones).

The product of its digits is 472500, while the sum is 42.

The square root of 53765556 is about 7332.4999829526. The cubic root of 53765556 is about 377.4285197174.

The spelling of 53765556 in words is "fifty-three million, seven hundred sixty-five thousand, five hundred fifty-six".