3601021 has 4 divisors (see below), whose sum is σ = 3622752. Its totient is φ = 3579292.

The previous prime is 3601019. The next prime is 3601027. The reversal of 3601021 is 1201063.

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: 1201063 = 59 ⋅20357.

It is a cyclic number.

It is not a de Polignac number, because 3601021 - 2¹ = 3601019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3600992 and 3601010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3601027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10615 + ... + 10948.

It is an arithmetic number, because the mean of its divisors is an integer number (905688).

Almost surely, 2^3601021 is an apocalyptic number.

It is an amenable number.

3601021 is a deficient number, since it is larger than the sum of its proper divisors (21731).

3601021 is a wasteful number, since it uses less digits than its factorization.

3601021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21730.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 3601021 is about 1897.6356341511. The cubic root of 3601021 is about 153.2763740338.

Adding to 3601021 its reverse (1201063), we get a palindrome (4802084).

The spelling of 3601021 in words is "three million, six hundred one thousand, twenty-one".