55324480 has 56 divisors (see below), whose sum is σ = 133392672. Its totient is φ = 21852672.

The previous prime is 55324463. The next prime is 55324481. The reversal of 55324480 is 8442355.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55324481) 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 7 ways as a sum of consecutive naturals, for example, 25519 + ... + 27601.

It is an arithmetic number, because the mean of its divisors is an integer number (2382012).

Almost surely, 2^55324480 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 55324480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66696336).

55324480 is an abundant number, since it is smaller than the sum of its proper divisors (78068192).

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

55324480 is a wasteful number, since it uses less digits than its factorization.

55324480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183 (or 2173 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 55324480 is about 7438.0427533055. The cubic root of 55324480 is about 381.0416480490.

The spelling of 55324480 in words is "fifty-five million, three hundred twenty-four thousand, four hundred eighty".