5161009 has 4 divisors (see below), whose sum is σ = 5898304. Its totient is φ = 4423716.

The previous prime is 5161003. The next prime is 5161031. The reversal of 5161009 is 9001615.

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 5161009 - 2¹⁹ = 4636721 is a prime.

It is a Duffinian number.

5161009 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5161003) 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, 368637 + ... + 368650.

It is an arithmetic number, because the mean of its divisors is an integer number (1474576).

Almost surely, 2^5161009 is an apocalyptic number.

It is an amenable number.

5161009 is a deficient number, since it is larger than the sum of its proper divisors (737295).

5161009 is an equidigital number, since it uses as much as digits as its factorization.

5161009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737294.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 5161009 is about 2271.7854212051. The cubic root of 5161009 is about 172.8137146358.

Subtracting 5161009 from its reverse (9001615), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 5161009 in words is "five million, one hundred sixty-one thousand, nine".