15340181 has 2 divisors, whose sum is σ = 15340182. Its totient is φ = 15340180.

The previous prime is 15340151. The next prime is 15340187. The reversal of 15340181 is 18104351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14938225 + 401956 = 3865^2 + 634^2 .

It is a cyclic number.

It is not a de Polignac number, because 15340181 - 2¹⁴ = 15323797 is a prime.

It is a super-2 number, since 2×15340181² = 470642306225522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15340187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7670090 + 7670091.

It is an arithmetic number, because the mean of its divisors is an integer number (7670091).

Almost surely, 2^15340181 is an apocalyptic number.

It is an amenable number.

15340181 is a deficient number, since it is larger than the sum of its proper divisors (1).

15340181 is an equidigital number, since it uses as much as digits as its factorization.

15340181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 15340181 is about 3916.6543120373. The cubic root of 15340181 is about 248.4716408469.

The spelling of 15340181 in words is "fifteen million, three hundred forty thousand, one hundred eighty-one".