5178239 has 4 divisors (see below), whose sum is σ = 5649000. Its totient is φ = 4707480.

The previous prime is 5178193. The next prime is 5178301. The reversal of 5178239 is 9328715.

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

It is a cyclic number.

It is not a de Polignac number, because 5178239 - 2⁸ = 5177983 is a prime.

It is a super-2 number, since 2×5178239² = 53628318282242, which contains 22 as substring.

It is a d-powerful number, because it can be written as 5⁸ + 1 + 7² + 8⁴ + 2⁸ + 3⁵ + 9⁷ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5178199 and 5178208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5178139) 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, 235364 + ... + 235385.

It is an arithmetic number, because the mean of its divisors is an integer number (1412250).

Almost surely, 2^5178239 is an apocalyptic number.

5178239 is a deficient number, since it is larger than the sum of its proper divisors (470761).

5178239 is a wasteful number, since it uses less digits than its factorization.

5178239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470760.

The product of its digits is 15120, while the sum is 35.

The square root of 5178239 is about 2275.5744329729. The cubic root of 5178239 is about 173.0058135639.

The spelling of 5178239 in words is "five million, one hundred seventy-eight thousand, two hundred thirty-nine".