4000501 has 4 divisors (see below), whose sum is σ = 4027500. Its totient is φ = 3973504.

The previous prime is 4000489. The next prime is 4000511. The reversal of 4000501 is 1050004.

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 756900 + 3243601 = 870^2 + 1801^2 .

It is a cyclic number.

It is not a de Polignac number, because 4000501 - 2¹³ = 3992309 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 (4000511) 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 3 ways as a sum of consecutive naturals, for example, 13276 + ... + 13573.

It is an arithmetic number, because the mean of its divisors is an integer number (1006875).

Almost surely, 2^4000501 is an apocalyptic number.

It is an amenable number.

4000501 is a deficient number, since it is larger than the sum of its proper divisors (26999).

4000501 is a wasteful number, since it uses less digits than its factorization.

4000501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26998.

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 4000501 is about 2000.1252460784. The cubic root of 4000501 is about 158.7467323195.

Adding to 4000501 its reverse (1050004), we get a palindrome (5050505).

The spelling of 4000501 in words is "four million, five hundred one", and thus it is an aban number.