3621501 has 18 divisors (see below), whose sum is σ = 5666778. Its totient is φ = 2227680.

The previous prime is 3621481. The next prime is 3621517. The reversal of 3621501 is 1051263.

It can be written as a sum of positive squares in 3 ways, for example, as 488601 + 3132900 = 699^2 + 1770^2 .

It is not a de Polignac number, because 3621501 - 2⁵ = 3621469 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621521) 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 in 17 ways as a sum of consecutive naturals, for example, 331 + ... + 2711.

It is an arithmetic number, because the mean of its divisors is an integer number (314821).

Almost surely, 2^3621501 is an apocalyptic number.

It is an amenable number.

3621501 is a deficient number, since it is larger than the sum of its proper divisors (2045277).

3621501 is a wasteful number, since it uses less digits than its factorization.

3621501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413 (or 2397 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 3621501 is about 1903.0241722059. The cubic root of 3621501 is about 153.5663999178.

Adding to 3621501 its reverse (1051263), we get a palindrome (4672764).

The spelling of 3621501 in words is "three million, six hundred twenty-one thousand, five hundred one".