55735720 has 32 divisors (see below), whose sum is σ = 125721000. Its totient is φ = 22238208.

The previous prime is 55735703. The next prime is 55735723. The reversal of 55735720 is 2753755.

55735720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 43639236 + 12096484 = 6606^2 + 3478^2 .

It is not an unprimeable number, because it can be changed into a prime (55735723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16756 + ... + 19804.

Almost surely, 2^55735720 is an apocalyptic number.

It is an amenable number.

55735720 is an abundant number, since it is smaller than the sum of its proper divisors (69985280).

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

55735720 is a wasteful number, since it uses less digits than its factorization.

55735720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517 (or 3513 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 34.

The square root of 55735720 is about 7465.6359407622. The cubic root of 55735720 is about 381.9834427187.

The spelling of 55735720 in words is "fifty-five million, seven hundred thirty-five thousand, seven hundred twenty".