55760320 has 224 divisors, whose sum is σ = 173223936. Its totient is φ = 16588800.

The previous prime is 55760297. The next prime is 55760371. The reversal of 55760320 is 2306755.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 763804 + ... + 763876.

Almost surely, 2^55760320 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 55760320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86611968).

55760320 is an abundant number, since it is smaller than the sum of its proper divisors (117463616).

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

55760320 is a wasteful number, since it uses less digits than its factorization.

55760320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 55760320 is about 7467.2833078704. The cubic root of 55760320 is about 382.0396329592.

The spelling of 55760320 in words is "fifty-five million, seven hundred sixty thousand, three hundred twenty".