5202509 has 8 divisors (see below), whose sum is σ = 5640600. Its totient is φ = 4769856.

The previous prime is 5202503. The next prime is 5202511. The reversal of 5202509 is 9052025.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 592900 + 4609609 = 770^2 + 2147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-5202509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5202503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 767 + ... + 3315.

It is an arithmetic number, because the mean of its divisors is an integer number (705075).

Almost surely, 2^5202509 is an apocalyptic number.

It is an amenable number.

5202509 is a deficient number, since it is larger than the sum of its proper divisors (438091).

5202509 is a wasteful number, since it uses less digits than its factorization.

5202509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 5202509 is about 2280.9009184969. The cubic root of 5202509 is about 173.2756806125.

The spelling of 5202509 in words is "five million, two hundred two thousand, five hundred nine".