3522521 has 2 divisors, whose sum is σ = 3522522. Its totient is φ = 3522520.

The previous prime is 3522503. The next prime is 3522529. The reversal of 3522521 is 1252253.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2449225 + 1073296 = 1565^2 + 1036^2 .

It is a cyclic number.

It is not a de Polignac number, because 3522521 - 2¹⁴ = 3506137 is a prime.

It is a Chen prime.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 3522493 and 3522502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3522529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1761260 + 1761261.

It is an arithmetic number, because the mean of its divisors is an integer number (1761261).

Almost surely, 2^3522521 is an apocalyptic number.

It is an amenable number.

3522521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3522521 is an equidigital number, since it uses as much as digits as its factorization.

3522521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 600, while the sum is 20.

The square root of 3522521 is about 1876.8380324365. The cubic root of 3522521 is about 152.1544050793.

Adding to 3522521 its reverse (1252253), we get a palindrome (4774774).

It can be divided in two parts, 352252 and 1, that added together give a palindrome (352253).

The spelling of 3522521 in words is "three million, five hundred twenty-two thousand, five hundred twenty-one".