33540427 has 2 divisors, whose sum is σ = 33540428. Its totient is φ = 33540426.

The previous prime is 33540421. The next prime is 33540457. The reversal of 33540427 is 72404533.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33540427 is a prime.

It is a super-2 number, since 2×33540427² = 2249920486684658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33540395 and 33540404.

It is not a weakly prime, because it can be changed into another prime (33540421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16770213 + 16770214.

It is an arithmetic number, because the mean of its divisors is an integer number (16770214).

Almost surely, 2^33540427 is an apocalyptic number.

33540427 is a deficient number, since it is larger than the sum of its proper divisors (1).

33540427 is an equidigital number, since it uses as much as digits as its factorization.

33540427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 33540427 is about 5791.4097592900. The cubic root of 33540427 is about 322.4949084788.

The spelling of 33540427 in words is "thirty-three million, five hundred forty thousand, four hundred twenty-seven".