5115209 has 4 divisors (see below), whose sum is σ = 5580240. Its totient is φ = 4650180.

The previous prime is 5115203. The next prime is 5115211. The reversal of 5115209 is 9025115.

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 5115209 - 2⁴ = 5115193 is a prime.

It is a super-2 number, since 2×5115209² = 52330726227362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5115203) 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, 232499 + ... + 232520.

It is an arithmetic number, because the mean of its divisors is an integer number (1395060).

Almost surely, 2^5115209 is an apocalyptic number.

It is an amenable number.

5115209 is a deficient number, since it is larger than the sum of its proper divisors (465031).

5115209 is a wasteful number, since it uses less digits than its factorization.

5115209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465030.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 5115209 is about 2261.6827805862. The cubic root of 5115209 is about 172.3009985472.

The spelling of 5115209 in words is "five million, one hundred fifteen thousand, two hundred nine".