55736320 has 48 divisors (see below), whose sum is σ = 133759080. Its totient is φ = 22290432.

The previous prime is 55736293. The next prime is 55736321. The reversal of 55736320 is 2363755.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55736321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7519 + ... + 12961.

Almost surely, 2^55736320 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 55736320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66879540).

55736320 is an abundant number, since it is smaller than the sum of its proper divisors (78022760).

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

55736320 is an equidigital number, since it uses as much as digits as its factorization.

55736320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5470 (or 5450 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 31.

The square root of 55736320 is about 7465.6761247726. The cubic root of 55736320 is about 381.9848134090.

The spelling of 55736320 in words is "fifty-five million, seven hundred thirty-six thousand, three hundred twenty".