5171851 has 4 divisors (see below), whose sum is σ = 5176512. Its totient is φ = 5167192.

The previous prime is 5171843. The next prime is 5171891. The reversal of 5171851 is 1581715.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1581715 = 5 ⋅316343.

It is a cyclic number.

It is not a de Polignac number, because 5171851 - 2³ = 5171843 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5171801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405 + ... + 3241.

It is an arithmetic number, because the mean of its divisors is an integer number (1294128).

Almost surely, 2^5171851 is an apocalyptic number.

5171851 is a deficient number, since it is larger than the sum of its proper divisors (4661).

5171851 is a wasteful number, since it uses less digits than its factorization.

5171851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4660.

The product of its digits is 1400, while the sum is 28.

The square root of 5171851 is about 2274.1703981892. The cubic root of 5171851 is about 172.9346429143.

The spelling of 5171851 in words is "five million, one hundred seventy-one thousand, eight hundred fifty-one".