5131009 has 12 divisors (see below), whose sum is σ = 5631276. Its totient is φ = 4672512.

The previous prime is 5130997. The next prime is 5131013. The reversal of 5131009 is 9001315.

It can be written as a sum of positive squares in 6 ways, for example, as 2480625 + 2650384 = 1575^2 + 1628^2 .

It is not a de Polignac number, because 5131009 - 2¹⁵ = 5098241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5131019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16237 + ... + 16549.

It is an arithmetic number, because the mean of its divisors is an integer number (469273).

Almost surely, 2^5131009 is an apocalyptic number.

It is an amenable number.

5131009 is a deficient number, since it is larger than the sum of its proper divisors (500267).

5131009 is a wasteful number, since it uses less digits than its factorization.

5131009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 5131009 is about 2265.1730618211. The cubic root of 5131009 is about 172.4782189120.

The spelling of 5131009 in words is "five million, one hundred thirty-one thousand, nine".