5509378751 has 4 divisors (see below), whose sum is σ = 5833459872. Its totient is φ = 5185297632.

The previous prime is 5509378739. The next prime is 5509378753. The reversal of 5509378751 is 1578739055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1578739055 = 5 ⋅315747811.

It is a cyclic number.

It is not a de Polignac number, because 5509378751 - 2⁶ = 5509378687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5509378751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5509378753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162040535 + ... + 162040568.

It is an arithmetic number, because the mean of its divisors is an integer number (1458364968).

Almost surely, 2^5509378751 is an apocalyptic number.

5509378751 is a deficient number, since it is larger than the sum of its proper divisors (324081121).

5509378751 is a wasteful number, since it uses less digits than its factorization.

5509378751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324081120.

The product of its (nonzero) digits is 1323000, while the sum is 50.

The square root of 5509378751 is about 74225.1894642243. The cubic root of 5509378751 is about 1766.1769390453.

The spelling of 5509378751 in words is "five billion, five hundred nine million, three hundred seventy-eight thousand, seven hundred fifty-one".