3651573 has 4 divisors (see below), whose sum is σ = 4868768. Its totient is φ = 2434380.

The previous prime is 3651559. The next prime is 3651607. The reversal of 3651573 is 3751563.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3751563 = 3 ⋅1250521.

It is not a de Polignac number, because 3651573 - 2¹² = 3647477 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3651573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3651673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608593 + ... + 608598.

It is an arithmetic number, because the mean of its divisors is an integer number (1217192).

Almost surely, 2^3651573 is an apocalyptic number.

It is an amenable number.

3651573 is a deficient number, since it is larger than the sum of its proper divisors (1217195).

3651573 is a wasteful number, since it uses less digits than its factorization.

3651573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217194.

The product of its digits is 9450, while the sum is 30.

The square root of 3651573 is about 1910.9089460254. The cubic root of 3651573 is about 153.9902872381.

It can be divided in two parts, 3651 and 573, that added together give a palindrome (4224).

The spelling of 3651573 in words is "three million, six hundred fifty-one thousand, five hundred seventy-three".