16612261 has 2 divisors, whose sum is σ = 16612262. Its totient is φ = 16612260.

The previous prime is 16612231. The next prime is 16612333. The reversal of 16612261 is 16221661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13549761 + 3062500 = 3681^2 + 1750^2 .

It is an emirp because it is prime and its reverse (16221661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16612261 - 2⁵ = 16612229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16612231) 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, 8306130 + 8306131.

It is an arithmetic number, because the mean of its divisors is an integer number (8306131).

Almost surely, 2^16612261 is an apocalyptic number.

It is an amenable number.

16612261 is a deficient number, since it is larger than the sum of its proper divisors (1).

16612261 is an equidigital number, since it uses as much as digits as its factorization.

16612261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 25.

The square root of 16612261 is about 4075.8141517984. The cubic root of 16612261 is about 255.1582306435.

The spelling of 16612261 in words is "sixteen million, six hundred twelve thousand, two hundred sixty-one".