4540001 has 4 divisors (see below), whose sum is σ = 4580292. Its totient is φ = 4499712.

The previous prime is 4539989. The next prime is 4540007. The reversal of 4540001 is 1000454.

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 2027776 + 2512225 = 1424^2 + 1585^2 .

It is a cyclic number.

It is not a de Polignac number, because 4540001 - 2¹⁰ = 4538977 is a prime.

It is a super-2 number, since 2×4540001² = 41223218160002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4540007) 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, 19976 + ... + 20201.

It is an arithmetic number, because the mean of its divisors is an integer number (1145073).

Almost surely, 2^4540001 is an apocalyptic number.

It is an amenable number.

4540001 is a deficient number, since it is larger than the sum of its proper divisors (40291).

4540001 is a wasteful number, since it uses less digits than its factorization.

4540001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40290.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 4540001 is about 2130.7278099279. The cubic root of 4540001 is about 165.5841067192.

Adding to 4540001 its reverse (1000454), we get a palindrome (5540455).

The spelling of 4540001 in words is "four million, five hundred forty thousand, one".