5179781 has 8 divisors (see below), whose sum is σ = 5552064. Its totient is φ = 4815040.

The previous prime is 5179739. The next prime is 5179831. The reversal of 5179781 is 1879715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5179781 is a prime.

It is a super-2 number, since 2×5179781² = 53660262415922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5179481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425 + ... + 3246.

It is an arithmetic number, because the mean of its divisors is an integer number (694008).

Almost surely, 2^5179781 is an apocalyptic number.

It is an amenable number.

5179781 is a deficient number, since it is larger than the sum of its proper divisors (372283).

5179781 is a wasteful number, since it uses less digits than its factorization.

5179781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771.

The product of its digits is 17640, while the sum is 38.

The square root of 5179781 is about 2275.9132233018. The cubic root of 5179781 is about 173.0229846838.

The spelling of 5179781 in words is "five million, one hundred seventy-nine thousand, seven hundred eighty-one".