55493328 has 80 divisors (see below), whose sum is σ = 157418496. Its totient is φ = 16705920.

The previous prime is 55493297. The next prime is 55493329. The reversal of 55493328 is 82339455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55493329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119625 + ... + 120087.

Almost surely, 2^55493328 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 55493328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78709248).

55493328 is an abundant number, since it is smaller than the sum of its proper divisors (101925168).

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

55493328 is a wasteful number, since it uses less digits than its factorization.

55493328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712 (or 706 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 55493328 is about 7449.3844040968. The cubic root of 55493328 is about 381.4288954214.

The spelling of 55493328 in words is "fifty-five million, four hundred ninety-three thousand, three hundred twenty-eight".