16227457 has 2 divisors, whose sum is σ = 16227458. Its totient is φ = 16227456.

The previous prime is 16227439. The next prime is 16227461. The reversal of 16227457 is 75472261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13133376 + 3094081 = 3624^2 + 1759^2 .

It is a cyclic number.

It is not a de Polignac number, because 16227457 - 2¹¹ = 16225409 is a prime.

It is not a weakly prime, because it can be changed into another prime (16227437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8113728 + 8113729.

It is an arithmetic number, because the mean of its divisors is an integer number (8113729).

Almost surely, 2^16227457 is an apocalyptic number.

It is an amenable number.

16227457 is a deficient number, since it is larger than the sum of its proper divisors (1).

16227457 is an equidigital number, since it uses as much as digits as its factorization.

16227457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 34.

The square root of 16227457 is about 4028.3317887185. The cubic root of 16227457 is about 253.1726703288.

The spelling of 16227457 in words is "sixteen million, two hundred twenty-seven thousand, four hundred fifty-seven".