16227481 has 4 divisors (see below), whose sum is σ = 16310052. Its totient is φ = 16144912.

The previous prime is 16227479. The next prime is 16227493. The reversal of 16227481 is 18472261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16128256 + 99225 = 4016^2 + 315^2 .

It is a cyclic number.

It is not a de Polignac number, because 16227481 - 2¹ = 16227479 is a prime.

It is a super-2 number, since 2×16227481² = 526662279210722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16227461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40990 + ... + 41383.

It is an arithmetic number, because the mean of its divisors is an integer number (4077513).

Almost surely, 2^16227481 is an apocalyptic number.

It is an amenable number.

16227481 is a deficient number, since it is larger than the sum of its proper divisors (82571).

16227481 is an equidigital number, since it uses as much as digits as its factorization.

16227481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82570.

The product of its digits is 5376, while the sum is 31.

The square root of 16227481 is about 4028.3347676180. The cubic root of 16227481 is about 253.1727951408.

The spelling of 16227481 in words is "sixteen million, two hundred twenty-seven thousand, four hundred eighty-one".