55103616 has 96 divisors (see below), whose sum is σ = 163787520. Its totient is φ = 17763840.

The previous prime is 55103551. The next prime is 55103621. The reversal of 55103616 is 61630155.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 55103616.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34941 + ... + 36483.

It is an arithmetic number, because the mean of its divisors is an integer number (1706120).

Almost surely, 2^55103616 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 55103616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81893760).

55103616 is an abundant number, since it is smaller than the sum of its proper divisors (108683904).

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

55103616 is a wasteful number, since it uses less digits than its factorization.

55103616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594 (or 1579 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 55103616 is about 7423.1809893064. The cubic root of 55103616 is about 380.5339124574.

The spelling of 55103616 in words is "fifty-five million, one hundred three thousand, six hundred sixteen".