13457219 has 2 divisors, whose sum is σ = 13457220. Its totient is φ = 13457218.

The previous prime is 13457209. The next prime is 13457239. The reversal of 13457219 is 91275431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13457219 - 2¹⁶ = 13391683 is a prime.

It is a super-2 number, since 2×13457219² = 362193486427922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13457209) 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, 6728609 + 6728610.

It is an arithmetic number, because the mean of its divisors is an integer number (6728610).

Almost surely, 2^13457219 is an apocalyptic number.

13457219 is a deficient number, since it is larger than the sum of its proper divisors (1).

13457219 is an equidigital number, since it uses as much as digits as its factorization.

13457219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 32.

The square root of 13457219 is about 3668.4082379146. The cubic root of 13457219 is about 237.8583708828.

The spelling of 13457219 in words is "thirteen million, four hundred fifty-seven thousand, two hundred nineteen".