5178389 has 2 divisors, whose sum is σ = 5178390. Its totient is φ = 5178388.

The previous prime is 5178379. The next prime is 5178391. The reversal of 5178389 is 9838715.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3301489 + 1876900 = 1817^2 + 1370^2 .

It is a cyclic number.

It is not a de Polignac number, because 5178389 - 2⁸ = 5178133 is a prime.

Together with 5178391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5178379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2589194 + 2589195.

It is an arithmetic number, because the mean of its divisors is an integer number (2589195).

Almost surely, 2^5178389 is an apocalyptic number.

It is an amenable number.

5178389 is a deficient number, since it is larger than the sum of its proper divisors (1).

5178389 is an equidigital number, since it uses as much as digits as its factorization.

5178389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 41.

The square root of 5178389 is about 2275.6073914452. The cubic root of 5178389 is about 173.0074840559.

The spelling of 5178389 in words is "five million, one hundred seventy-eight thousand, three hundred eighty-nine".