3645253 has 2 divisors, whose sum is σ = 3645254. Its totient is φ = 3645252.

The previous prime is 3645251. The next prime is 3645263. The reversal of 3645253 is 3525463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3602404 + 42849 = 1898^2 + 207^2 .

It is a cyclic number.

It is not a de Polignac number, because 3645253 - 2¹ = 3645251 is a prime.

Together with 3645251, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3645251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822626 + 1822627.

It is an arithmetic number, because the mean of its divisors is an integer number (1822627).

Almost surely, 2^3645253 is an apocalyptic number.

It is an amenable number.

3645253 is a deficient number, since it is larger than the sum of its proper divisors (1).

3645253 is an equidigital number, since it uses as much as digits as its factorization.

3645253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 28.

The square root of 3645253 is about 1909.2545665783. The cubic root of 3645253 is about 153.9013958092.

The spelling of 3645253 in words is "three million, six hundred forty-five thousand, two hundred fifty-three".