16530427 has 2 divisors, whose sum is σ = 16530428. Its totient is φ = 16530426.

The previous prime is 16530419. The next prime is 16530463. The reversal of 16530427 is 72403561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16530427 - 2³ = 16530419 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16530395 and 16530404.

It is not a weakly prime, because it can be changed into another prime (16530487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8265213 + 8265214.

It is an arithmetic number, because the mean of its divisors is an integer number (8265214).

Almost surely, 2^16530427 is an apocalyptic number.

16530427 is a deficient number, since it is larger than the sum of its proper divisors (1).

16530427 is an equidigital number, since it uses as much as digits as its factorization.

16530427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 16530427 is about 4065.7627820619. The cubic root of 16530427 is about 254.7385607061.

Adding to 16530427 its reverse (72403561), we get a palindrome (88933988).

The spelling of 16530427 in words is "sixteen million, five hundred thirty thousand, four hundred twenty-seven".