55317360 has 160 divisors (see below), whose sum is σ = 206415360. Its totient is φ = 11971584.

The previous prime is 55317359. The next prime is 55317377. The reversal of 55317360 is 6371355.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 31054 + ... + 32786.

It is an arithmetic number, because the mean of its divisors is an integer number (1290096).

Almost surely, 2^55317360 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 55317360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103207680).

55317360 is an abundant number, since it is smaller than the sum of its proper divisors (151098000).

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

55317360 is a wasteful number, since it uses less digits than its factorization.

55317360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 55317360 is about 7437.5641173707. The cubic root of 55317360 is about 381.0253012593.

The spelling of 55317360 in words is "fifty-five million, three hundred seventeen thousand, three hundred sixty".