5178621 has 16 divisors (see below), whose sum is σ = 8307200. Its totient is φ = 2803248.

The previous prime is 5178599. The next prime is 5178623. The reversal of 5178621 is 1268715.

It is not a de Polignac number, because 5178621 - 2¹⁰ = 5177597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5178623) 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, 6091 + ... + 6888.

It is an arithmetic number, because the mean of its divisors is an integer number (519200).

Almost surely, 2^5178621 is an apocalyptic number.

It is an amenable number.

5178621 is a deficient number, since it is larger than the sum of its proper divisors (3128579).

5178621 is a wasteful number, since it uses less digits than its factorization.

5178621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13008.

The product of its digits is 3360, while the sum is 30.

The square root of 5178621 is about 2275.6583662756. The cubic root of 5178621 is about 173.0100676868.

The spelling of 5178621 in words is "five million, one hundred seventy-eight thousand, six hundred twenty-one".