5178787 has 2 divisors, whose sum is σ = 5178788. Its totient is φ = 5178786.

The previous prime is 5178781. The next prime is 5178809. The reversal of 5178787 is 7878715.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5178787 - 2¹¹ = 5176739 is a prime.

It is not a weakly prime, because it can be changed into another prime (5178781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2589393 + 2589394.

It is an arithmetic number, because the mean of its divisors is an integer number (2589394).

Almost surely, 2^5178787 is an apocalyptic number.

5178787 is a deficient number, since it is larger than the sum of its proper divisors (1).

5178787 is an equidigital number, since it uses as much as digits as its factorization.

5178787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109760, while the sum is 43.

The square root of 5178787 is about 2275.6948389448. The cubic root of 5178787 is about 173.0119162719.

The spelling of 5178787 in words is "five million, one hundred seventy-eight thousand, seven hundred eighty-seven".