55710720 has 352 divisors, whose sum is σ = 220093440. Its totient is φ = 13271040.

The previous prime is 55710719. The next prime is 55710731. The reversal of 55710720 is 2701755.

55710720 is a `hidden beast` number, since 557 + 107 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1797105 + ... + 1797135.

Almost surely, 2^55710720 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 55710720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110046720).

55710720 is an abundant number, since it is smaller than the sum of its proper divisors (164382720).

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

55710720 is a wasteful number, since it uses less digits than its factorization.

55710720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 55710720 is about 7463.9614146913. The cubic root of 55710720 is about 381.9263218739.

The spelling of 55710720 in words is "fifty-five million, seven hundred ten thousand, seven hundred twenty".