5197309 has 4 divisors (see below), whose sum is σ = 5597116. Its totient is φ = 4797504.

The previous prime is 5197303. The next prime is 5197319. The reversal of 5197309 is 9037915.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2732409 + 2464900 = 1653^2 + 1570^2 .

It is a cyclic number.

It is not a de Polignac number, because 5197309 - 2¹³ = 5189117 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 (5197303) 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, 199884 + ... + 199909.

It is an arithmetic number, because the mean of its divisors is an integer number (1399279).

Almost surely, 2^5197309 is an apocalyptic number.

It is an amenable number.

5197309 is a deficient number, since it is larger than the sum of its proper divisors (399807).

5197309 is a wasteful number, since it uses less digits than its factorization.

5197309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399806.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 5197309 is about 2279.7607330595. The cubic root of 5197309 is about 173.2179306624.

Subtracting 5197309 from its reverse (9037915), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 5197309 in words is "five million, one hundred ninety-seven thousand, three hundred nine".