55899648 has 120 divisors (see below), whose sum is σ = 184483728. Its totient is φ = 15962112.

The previous prime is 55899647. The next prime is 55899667. The reversal of 55899648 is 84699855.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55899594 and 55899603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55899643) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 31390 + ... + 33122.

Almost surely, 2^55899648 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 55899648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92241864).

55899648 is an abundant number, since it is smaller than the sum of its proper divisors (128584080).

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

55899648 is a wasteful number, since it uses less digits than its factorization.

55899648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764 (or 1745 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The square root of 55899648 is about 7476.6067169539. The cubic root of 55899648 is about 382.3575683970.

The spelling of 55899648 in words is "fifty-five million, eight hundred ninety-nine thousand, six hundred forty-eight".