55253216 has 36 divisors (see below), whose sum is σ = 114830352. Its totient is φ = 26167104.

The previous prime is 55253147. The next prime is 55253221. The reversal of 55253216 is 61235255.

It is a happy number.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 9161 + ... + 13943.

It is an arithmetic number, because the mean of its divisors is an integer number (3189732).

Almost surely, 2^55253216 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 55253216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57415176).

55253216 is an abundant number, since it is smaller than the sum of its proper divisors (59577136).

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

55253216 is a wasteful number, since it uses less digits than its factorization.

55253216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4831 (or 4804 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 55253216 is about 7433.2507020818. The cubic root of 55253216 is about 380.8779699346.

The spelling of 55253216 in words is "fifty-five million, two hundred fifty-three thousand, two hundred sixteen".