5540001 has 16 divisors (see below), whose sum is σ = 7875840. Its totient is φ = 3453840.

The previous prime is 5539999. The next prime is 5540023. The reversal of 5540001 is 1000455.

It is not a de Polignac number, because 5540001 - 2¹ = 5539999 is a prime.

It is a super-2 number, since 2×5540001² = 61383222160002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5540701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4146 + ... + 5316.

It is an arithmetic number, because the mean of its divisors is an integer number (492240).

Almost surely, 2^5540001 is an apocalyptic number.

It is an amenable number.

5540001 is a deficient number, since it is larger than the sum of its proper divisors (2335839).

5540001 is a wasteful number, since it uses less digits than its factorization.

5540001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 5540001 is about 2353.7206716176. The cubic root of 5540001 is about 176.9443152101.

Adding to 5540001 its reverse (1000455), we get a palindrome (6540456).

The spelling of 5540001 in words is "five million, five hundred forty thousand, one".