3525521 has 2 divisors, whose sum is σ = 3525522. Its totient is φ = 3525520.

The previous prime is 3525499. The next prime is 3525539. The reversal of 3525521 is 1255253.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2235025 + 1290496 = 1495^2 + 1136^2 .

It is an emirp because it is prime and its reverse (1255253) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3525521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3525541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1762760 + 1762761.

It is an arithmetic number, because the mean of its divisors is an integer number (1762761).

Almost surely, 2^3525521 is an apocalyptic number.

It is an amenable number.

3525521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3525521 is an equidigital number, since it uses as much as digits as its factorization.

3525521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1500, while the sum is 23.

The square root of 3525521 is about 1877.6370788840. The cubic root of 3525521 is about 152.1975875701.

The spelling of 3525521 in words is "three million, five hundred twenty-five thousand, five hundred twenty-one".