5252521 has 4 divisors (see below), whose sum is σ = 5261652. Its totient is φ = 5243392.

The previous prime is 5252501. The next prime is 5252537. The reversal of 5252521 is 1252525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2676496 + 2576025 = 1636^2 + 1605^2 .

It is a cyclic number.

It is not a de Polignac number, because 5252521 - 2¹⁹ = 4728233 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5252492 and 5252501.

It is not an unprimeable number, because it can be changed into a prime (5252501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3640 + ... + 4873.

It is an arithmetic number, because the mean of its divisors is an integer number (1315413).

Almost surely, 2^5252521 is an apocalyptic number.

It is an amenable number.

5252521 is a deficient number, since it is larger than the sum of its proper divisors (9131).

5252521 is an equidigital number, since it uses as much as digits as its factorization.

5252521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9130.

The product of its digits is 1000, while the sum is 22.

The square root of 5252521 is about 2291.8379087536. The cubic root of 5252521 is about 173.8291470408.

The spelling of 5252521 in words is "five million, two hundred fifty-two thousand, five hundred twenty-one".