5171621 has 16 divisors (see below), whose sum is σ = 6741504. Its totient is φ = 3849984.

The previous prime is 5171609. The next prime is 5171623. The reversal of 5171621 is 1261715.

It is a cyclic number.

It is not a de Polignac number, because 5171621 - 2⁶ = 5171557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5171623) 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 15 ways as a sum of consecutive naturals, for example, 125 + ... + 3218.

It is an arithmetic number, because the mean of its divisors is an integer number (421344).

Almost surely, 2^5171621 is an apocalyptic number.

It is an amenable number.

5171621 is a deficient number, since it is larger than the sum of its proper divisors (1569883).

5171621 is a wasteful number, since it uses less digits than its factorization.

5171621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3380.

The product of its digits is 420, while the sum is 23.

The square root of 5171621 is about 2274.1198297363. The cubic root of 5171621 is about 172.9320793216.

The spelling of 5171621 in words is "five million, one hundred seventy-one thousand, six hundred twenty-one".