5540531 has 2 divisors, whose sum is σ = 5540532. Its totient is φ = 5540530.

The previous prime is 5540519. The next prime is 5540573. The reversal of 5540531 is 1350455.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5540531 - 2¹⁴ = 5524147 is a prime.

It is a super-2 number, since 2×5540531² = 61394967523922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5540497 and 5540506.

It is not a weakly prime, because it can be changed into another prime (5540581) 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, 2770265 + 2770266.

It is an arithmetic number, because the mean of its divisors is an integer number (2770266).

Almost surely, 2^5540531 is an apocalyptic number.

5540531 is a deficient number, since it is larger than the sum of its proper divisors (1).

5540531 is an equidigital number, since it uses as much as digits as its factorization.

5540531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 5540531 is about 2353.8332566263. The cubic root of 5540531 is about 176.9499576577.

Adding to 5540531 its reverse (1350455), we get a palindrome (6890986).

The spelling of 5540531 in words is "five million, five hundred forty thousand, five hundred thirty-one".