5018521 has 2 divisors, whose sum is σ = 5018522. Its totient is φ = 5018520.

The previous prime is 5018513. The next prime is 5018539. The reversal of 5018521 is 1258105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3027600 + 1990921 = 1740^2 + 1411^2 .

It is a cyclic number.

It is not a de Polignac number, because 5018521 - 2³ = 5018513 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 5018492 and 5018501.

It is not a weakly prime, because it can be changed into another prime (5018551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2509260 + 2509261.

It is an arithmetic number, because the mean of its divisors is an integer number (2509261).

Almost surely, 2^5018521 is an apocalyptic number.

It is an amenable number.

5018521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5018521 is an equidigital number, since it uses as much as digits as its factorization.

5018521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 5018521 is about 2240.2055709242. The cubic root of 5018521 is about 171.2084709357.

The spelling of 5018521 in words is "five million, eighteen thousand, five hundred twenty-one".