3521201 has 2 divisors, whose sum is σ = 3521202. Its totient is φ = 3521200.

The previous prime is 3521191. The next prime is 3521237. The reversal of 3521201 is 1021253.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3418801 + 102400 = 1849^2 + 320^2 .

It is an emirp because it is prime and its reverse (1021253) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3521201 is a prime.

It is not a weakly prime, because it can be changed into another prime (3521281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760600 + 1760601.

It is an arithmetic number, because the mean of its divisors is an integer number (1760601).

Almost surely, 2^3521201 is an apocalyptic number.

It is an amenable number.

3521201 is a deficient number, since it is larger than the sum of its proper divisors (1).

3521201 is an equidigital number, since it uses as much as digits as its factorization.

3521201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 3521201 is about 1876.4863442082. The cubic root of 3521201 is about 152.1353970159.

Adding to 3521201 its reverse (1021253), we get a palindrome (4542454).

The spelling of 3521201 in words is "three million, five hundred twenty-one thousand, two hundred one".