5171931 has 20 divisors (see below), whose sum is σ = 7849512. Its totient is φ = 3392928.

The previous prime is 5171923. The next prime is 5171951. The reversal of 5171931 is 1391715.

It is a happy number.

It is not a de Polignac number, because 5171931 - 2³ = 5171923 is a prime.

It is a super-2 number, since 2×5171931² = 53497740537522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 5171895 and 5171904.

It is not an unprimeable number, because it can be changed into a prime (5171951) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4951 + ... + 5903.

Almost surely, 2^5171931 is an apocalyptic number.

5171931 is a deficient number, since it is larger than the sum of its proper divisors (2677581).

5171931 is an equidigital number, since it uses as much as digits as its factorization.

5171931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032 (or 1023 counting only the distinct ones).

The product of its digits is 945, while the sum is 27.

The square root of 5171931 is about 2274.1879869527. The cubic root of 5171931 is about 172.9355345809.

The spelling of 5171931 in words is "five million, one hundred seventy-one thousand, nine hundred thirty-one".