55750720 has 28 divisors (see below), whose sum is σ = 132757164. Its totient is φ = 22300160.

The previous prime is 55750703. The next prime is 55750729. The reversal of 55750720 is 2705755.

It can be written as a sum of positive squares in 2 ways, for example, as 7974976 + 47775744 = 2824^2 + 6912^2 .

It is not an unprimeable number, because it can be changed into a prime (55750729) 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, 86791 + ... + 87430.

Almost surely, 2^55750720 is an apocalyptic number.

It is an amenable number.

55750720 is an abundant number, since it is smaller than the sum of its proper divisors (77006444).

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

55750720 is a wasteful number, since it uses less digits than its factorization.

55750720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174238 (or 174228 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 31.

The square root of 55750720 is about 7466.6404761445. The cubic root of 55750720 is about 382.0177070271.

The spelling of 55750720 in words is "fifty-five million, seven hundred fifty thousand, seven hundred twenty".