5179398281 has 4 divisors (see below), whose sum is σ = 5179842564. Its totient is φ = 5178954000.

The previous prime is 5179398251. The next prime is 5179398283. The reversal of 5179398281 is 1828939715.

It is a happy number.

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 4880419600 + 298978681 = 69860^2 + 17291^2 .

It is a cyclic number.

It is not a de Polignac number, because 5179398281 - 2²² = 5175203977 is a prime.

It is a super-2 number, since 2×5179398281² = 53652333106451509922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5179398283) 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, 204170 + ... + 228131.

It is an arithmetic number, because the mean of its divisors is an integer number (1294960641).

Almost surely, 2^5179398281 is an apocalyptic number.

It is an amenable number.

5179398281 is a deficient number, since it is larger than the sum of its proper divisors (444283).

5179398281 is a wasteful number, since it uses less digits than its factorization.

5179398281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444282.

The product of its digits is 1088640, while the sum is 53.

The square root of 5179398281 is about 71968.0365231677. The cubic root of 5179398281 is about 1730.1872318993.

The spelling of 5179398281 in words is "five billion, one hundred seventy-nine million, three hundred ninety-eight thousand, two hundred eighty-one".