16227261 has 6 divisors (see below), whose sum is σ = 23439390. Its totient is φ = 10818168.

The previous prime is 16227241. The next prime is 16227287. The reversal of 16227261 is 16272261.

It can be written as a sum of positive squares in only one way, i.e., 11431161 + 4796100 = 3381^2 + 2190^2 .

It is not a de Polignac number, because 16227261 - 2¹¹ = 16225213 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16227241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 901506 + ... + 901523.

It is an arithmetic number, because the mean of its divisors is an integer number (3906565).

Almost surely, 2^16227261 is an apocalyptic number.

It is an amenable number.

16227261 is a deficient number, since it is larger than the sum of its proper divisors (7212129).

16227261 is a wasteful number, since it uses less digits than its factorization.

16227261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803035 (or 1803032 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 16227261 is about 4028.3074609568. The cubic root of 16227261 is about 253.1716510267.

The spelling of 16227261 in words is "sixteen million, two hundred twenty-seven thousand, two hundred sixty-one".