5202521 has 2 divisors, whose sum is σ = 5202522. Its totient is φ = 5202520.

The previous prime is 5202511. The next prime is 5202541. The reversal of 5202521 is 1252025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5175625 + 26896 = 2275^2 + 164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5202521 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 5202521.

It is not a weakly prime, because it can be changed into another prime (5202511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2601260 + 2601261.

It is an arithmetic number, because the mean of its divisors is an integer number (2601261).

Almost surely, 2^5202521 is an apocalyptic number.

It is an amenable number.

5202521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5202521 is an equidigital number, since it uses as much as digits as its factorization.

5202521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 5202521 is about 2280.9035490349. The cubic root of 5202521 is about 173.2758138371.

Adding to 5202521 its reverse (1252025), we get a palindrome (6454546).

The spelling of 5202521 in words is "five million, two hundred two thousand, five hundred twenty-one".