5164587521 has 4 divisors (see below), whose sum is σ = 5170100292. Its totient is φ = 5159074752.

The previous prime is 5164587469. The next prime is 5164587563. The reversal of 5164587521 is 1257854615.

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 1688305921 + 3476281600 = 41089^2 + 58960^2 .

It is a cyclic number.

It is not a de Polignac number, because 5164587521 - 2¹⁸ = 5164325377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5164587121) 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, 2754980 + ... + 2756853.

It is an arithmetic number, because the mean of its divisors is an integer number (1292525073).

Almost surely, 2^5164587521 is an apocalyptic number.

It is an amenable number.

5164587521 is a deficient number, since it is larger than the sum of its proper divisors (5512771).

5164587521 is an equidigital number, since it uses as much as digits as its factorization.

5164587521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5512770.

The product of its digits is 336000, while the sum is 44.

The square root of 5164587521 is about 71865.0646767955. The cubic root of 5164587521 is about 1728.5364704887.

The spelling of 5164587521 in words is "five billion, one hundred sixty-four million, five hundred eighty-seven thousand, five hundred twenty-one".