550728751 has 4 divisors (see below), whose sum is σ = 562446432. Its totient is φ = 539011072.

The previous prime is 550728709. The next prime is 550728791. The reversal of 550728751 is 157827055.

550728751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 157827055 = 5 ⋅31565411.

It is a cyclic number.

It is not a de Polignac number, because 550728751 - 2¹¹ = 550726703 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550728701) 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, 5858770 + ... + 5858863.

It is an arithmetic number, because the mean of its divisors is an integer number (140611608).

Almost surely, 2^550728751 is an apocalyptic number.

550728751 is a deficient number, since it is larger than the sum of its proper divisors (11717681).

550728751 is a wasteful number, since it uses less digits than its factorization.

550728751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11717680.

The product of its (nonzero) digits is 98000, while the sum is 40.

The square root of 550728751 is about 23467.6106794024. The cubic root of 550728751 is about 819.6829782843.

The spelling of 550728751 in words is "five hundred fifty million, seven hundred twenty-eight thousand, seven hundred fifty-one".