5215309 has 4 divisors (see below), whose sum is σ = 5689440. Its totient is φ = 4741180.

The previous prime is 5215303. The next prime is 5215313. The reversal of 5215309 is 9035125.

5215309 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-5215309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5215303) 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, 237049 + ... + 237070.

It is an arithmetic number, because the mean of its divisors is an integer number (1422360).

Almost surely, 2^5215309 is an apocalyptic number.

It is an amenable number.

5215309 is a deficient number, since it is larger than the sum of its proper divisors (474131).

5215309 is a wasteful number, since it uses less digits than its factorization.

5215309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474130.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 5215309 is about 2283.7051035543. The cubic root of 5215309 is about 173.4176705788.

The spelling of 5215309 in words is "five million, two hundred fifteen thousand, three hundred nine".