52416521 has 2 divisors, whose sum is σ = 52416522. Its totient is φ = 52416520.

The previous prime is 52416503. The next prime is 52416577. The reversal of 52416521 is 12561425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30691600 + 21724921 = 5540^2 + 4661^2 .

It is a cyclic number.

It is not a de Polignac number, because 52416521 - 2¹⁰ = 52415497 is a prime.

It is not a weakly prime, because it can be changed into another prime (52410521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26208260 + 26208261.

It is an arithmetic number, because the mean of its divisors is an integer number (26208261).

Almost surely, 2^52416521 is an apocalyptic number.

It is an amenable number.

52416521 is a deficient number, since it is larger than the sum of its proper divisors (1).

52416521 is an equidigital number, since it uses as much as digits as its factorization.

52416521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 26.

The square root of 52416521 is about 7239.9254830419. The cubic root of 52416521 is about 374.2450494487.

Adding to 52416521 its reverse (12561425), we get a palindrome (64977946).

The spelling of 52416521 in words is "fifty-two million, four hundred sixteen thousand, five hundred twenty-one".