5131520505 has 20 divisors (see below), whose sum is σ = 9198726372. Its totient is φ = 2736810720.

The previous prime is 5131520497. The next prime is 5131520521. The reversal of 5131520505 is 5050251315.

5131520505 is a `hidden beast` number, since 5 + 1 + 3 + 152 + 0 + 505 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1204367616 + 3927152889 = 34704^2 + 62667^2 .

It is not a de Polignac number, because 5131520505 - 2³ = 5131520497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6334806 + ... + 6335615.

Almost surely, 2^5131520505 is an apocalyptic number.

It is an amenable number.

5131520505 is a deficient number, since it is larger than the sum of its proper divisors (4067205867).

5131520505 is a wasteful number, since it uses less digits than its factorization.

5131520505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12670438 (or 12670429 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 5131520505 is about 71634.6320225071. The cubic root of 5131520505 is about 1724.8395011352.

The spelling of 5131520505 in words is "five billion, one hundred thirty-one million, five hundred twenty thousand, five hundred five".