55528416 has 144 divisors (see below), whose sum is σ = 169054704. Its totient is φ = 17915904.

The previous prime is 55528387. The next prime is 55528441. The reversal of 55528416 is 61482555.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 287616 + ... + 287808.

It is an arithmetic number, because the mean of its divisors is an integer number (1173991).

Almost surely, 2^55528416 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 55528416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84527352).

55528416 is an abundant number, since it is smaller than the sum of its proper divisors (113526288).

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

55528416 is a wasteful number, since it uses less digits than its factorization.

55528416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 235 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 55528416 is about 7451.7391258685. The cubic root of 55528416 is about 381.5092699924.

The spelling of 55528416 in words is "fifty-five million, five hundred twenty-eight thousand, four hundred sixteen".