5198525509 has 4 divisors (see below), whose sum is σ = 5201162316. Its totient is φ = 5195888704.

The previous prime is 5198525503. The next prime is 5198525537. The reversal of 5198525509 is 9055258915.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 742562500 + 4455963009 = 27250^2 + 66753^2 .

It is a cyclic number.

It is not a de Polignac number, because 5198525509 - 2⁵ = 5198525477 is a prime.

It is a Smith number, since the sum of its digits (49) 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 (5198525503) 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, 1315444 + ... + 1319389.

It is an arithmetic number, because the mean of its divisors is an integer number (1300290579).

Almost surely, 2^5198525509 is an apocalyptic number.

It is an amenable number.

5198525509 is a deficient number, since it is larger than the sum of its proper divisors (2636807).

5198525509 is a wasteful number, since it uses less digits than its factorization.

5198525509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636806.

The product of its (nonzero) digits is 810000, while the sum is 49.

The square root of 5198525509 is about 72100.8010288374. The cubic root of 5198525509 is about 1732.3144436935.

The spelling of 5198525509 in words is "five billion, one hundred ninety-eight million, five hundred twenty-five thousand, five hundred nine".