5185772521 has 4 divisors (see below), whose sum is σ = 5248251792. Its totient is φ = 5123293252.

The previous prime is 5185772519. The next prime is 5185772539. The reversal of 5185772521 is 1252775815.

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 not a de Polignac number, because 5185772521 - 2¹ = 5185772519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5185172521) 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, 31239511 + ... + 31239676.

It is an arithmetic number, because the mean of its divisors is an integer number (1312062948).

Almost surely, 2^5185772521 is an apocalyptic number.

It is an amenable number.

5185772521 is a deficient number, since it is larger than the sum of its proper divisors (62479271).

5185772521 is an equidigital number, since it uses as much as digits as its factorization.

5185772521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62479270.

The product of its digits is 196000, while the sum is 43.

The square root of 5185772521 is about 72012.3081215982. The cubic root of 5185772521 is about 1730.8967163397.

The spelling of 5185772521 in words is "five billion, one hundred eighty-five million, seven hundred seventy-two thousand, five hundred twenty-one".