3524621 has 2 divisors, whose sum is σ = 3524622. Its totient is φ = 3524620.

The previous prime is 3524617. The next prime is 3524699. The reversal of 3524621 is 1264253.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1999396 + 1525225 = 1414^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 3524621 - 2² = 3524617 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3524611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1762310 + 1762311.

It is an arithmetic number, because the mean of its divisors is an integer number (1762311).

Almost surely, 2^3524621 is an apocalyptic number.

It is an amenable number.

3524621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3524621 is an equidigital number, since it uses as much as digits as its factorization.

3524621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 3524621 is about 1877.3974006587. The cubic root of 3524621 is about 152.1846353959.

Adding to 3524621 its reverse (1264253), we get a palindrome (4788874).

The spelling of 3524621 in words is "three million, five hundred twenty-four thousand, six hundred twenty-one".