5198561131 has 4 divisors (see below), whose sum is σ = 5424585552. Its totient is φ = 4972536712.

The previous prime is 5198561129. The next prime is 5198561197. The reversal of 5198561131 is 1311658915.

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

It is a cyclic number.

It is not a de Polignac number, because 5198561131 - 2¹ = 5198561129 is a prime.

It is a super-2 number, since 2×5198561131² = 54050075665487998322, which contains 22 as substring.

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 not an unprimeable number, because it can be changed into a prime (5198565131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113012176 + ... + 113012221.

It is an arithmetic number, because the mean of its divisors is an integer number (1356146388).

Almost surely, 2^5198561131 is an apocalyptic number.

5198561131 is a deficient number, since it is larger than the sum of its proper divisors (226024421).

5198561131 is a wasteful number, since it uses less digits than its factorization.

5198561131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226024420.

The product of its digits is 32400, while the sum is 40.

The square root of 5198561131 is about 72101.0480575699. The cubic root of 5198561131 is about 1732.3184004798.

The spelling of 5198561131 in words is "five billion, one hundred ninety-eight million, five hundred sixty-one thousand, one hundred thirty-one".