5187321133 has 4 divisors (see below), whose sum is σ = 5187483808. Its totient is φ = 5187158460.

The previous prime is 5187321103. The next prime is 5187321179. The reversal of 5187321133 is 3311237815.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5187321133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5187321103) 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, 16023 + ... + 103108.

It is an arithmetic number, because the mean of its divisors is an integer number (1296870952).

Almost surely, 2^5187321133 is an apocalyptic number.

It is an amenable number.

5187321133 is a deficient number, since it is larger than the sum of its proper divisors (162675).

5187321133 is a wasteful number, since it uses less digits than its factorization.

5187321133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162674.

The product of its digits is 15120, while the sum is 34.

The square root of 5187321133 is about 72023.0597308945. The cubic root of 5187321133 is about 1731.0689967239.

Adding to 5187321133 its reverse (3311237815), we get a palindrome (8498558948).

The spelling of 5187321133 in words is "five billion, one hundred eighty-seven million, three hundred twenty-one thousand, one hundred thirty-three".