5171287394 has 32 divisors (see below), whose sum is σ = 9551678976. Its totient is φ = 2044779840.

The previous prime is 5171287357. The next prime is 5171287421. The reversal of 5171287394 is 4937821715.

It is a super-2 number, since 2×5171287394² = 53484426622686622472, which contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445079 + ... + 456549.

It is an arithmetic number, because the mean of its divisors is an integer number (298489968).

Almost surely, 2^5171287394 is an apocalyptic number.

5171287394 is a deficient number, since it is larger than the sum of its proper divisors (4380391582).

5171287394 is a wasteful number, since it uses less digits than its factorization.

5171287394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13970.

The product of its digits is 423360, while the sum is 47.

The square root of 5171287394 is about 71911.6638244451. The cubic root of 5171287394 is about 1729.2836079576.

The spelling of 5171287394 in words is "five billion, one hundred seventy-one million, two hundred eighty-seven thousand, three hundred ninety-four".