5540023 has 2 divisors, whose sum is σ = 5540024. Its totient is φ = 5540022.

The previous prime is 5539999. The next prime is 5540027. The reversal of 5540023 is 3200455.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5540023 - 2¹⁷ = 5408951 is a prime.

5540023 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5540027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2770011 + 2770012.

It is an arithmetic number, because the mean of its divisors is an integer number (2770012).

Almost surely, 2^5540023 is an apocalyptic number.

5540023 is a deficient number, since it is larger than the sum of its proper divisors (1).

5540023 is an equidigital number, since it uses as much as digits as its factorization.

5540023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 5540023 is about 2353.7253450647. The cubic root of 5540023 is about 176.9445494320.

Adding to 5540023 its reverse (3200455), we get a palindrome (8740478).

The spelling of 5540023 in words is "five million, five hundred forty thousand, twenty-three".