3821501 has 4 divisors (see below), whose sum is σ = 3826332. Its totient is φ = 3816672.

The previous prime is 3821497. The next prime is 3821513. The reversal of 3821501 is 1051283.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2105401 + 1716100 = 1451^2 + 1310^2 .

It is a cyclic number.

It is not a de Polignac number, because 3821501 - 2² = 3821497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3821581) 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, 920 + ... + 2913.

It is an arithmetic number, because the mean of its divisors is an integer number (956583).

Almost surely, 2^3821501 is an apocalyptic number.

It is an amenable number.

3821501 is a deficient number, since it is larger than the sum of its proper divisors (4831).

3821501 is an equidigital number, since it uses as much as digits as its factorization.

3821501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4830.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 3821501 is about 1954.8659800610. The cubic root of 3821501 is about 156.3428384809.

Adding to 3821501 its reverse (1051283), we get a palindrome (4872784).

The spelling of 3821501 in words is "three million, eight hundred twenty-one thousand, five hundred one".