4716521 has 2 divisors, whose sum is σ = 4716522. Its totient is φ = 4716520.

The previous prime is 4716511. The next prime is 4716527. The reversal of 4716521 is 1256174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4044121 + 672400 = 2011^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 4716521 - 2¹⁰ = 4715497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4716527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2358260 + 2358261.

It is an arithmetic number, because the mean of its divisors is an integer number (2358261).

Almost surely, 2^4716521 is an apocalyptic number.

It is an amenable number.

4716521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4716521 is an equidigital number, since it uses as much as digits as its factorization.

4716521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 26.

The square root of 4716521 is about 2171.7552808731. The cubic root of 4716521 is about 167.7029069945.

The spelling of 4716521 in words is "four million, seven hundred sixteen thousand, five hundred twenty-one".