55238016 has 128 divisors (see below), whose sum is σ = 158140800. Its totient is φ = 17031168.

The previous prime is 55237999. The next prime is 55238023. The reversal of 55238016 is 61083255.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488776 + ... + 488888.

It is an arithmetic number, because the mean of its divisors is an integer number (1235475).

Almost surely, 2^55238016 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 55238016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79070400).

55238016 is an abundant number, since it is smaller than the sum of its proper divisors (102902784).

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

55238016 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (55238015) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (216).

55238016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 55238016 is about 7432.2281988647. The cubic root of 55238016 is about 380.8430405886.

The spelling of 55238016 in words is "fifty-five million, two hundred thirty-eight thousand, sixteen".