72518219 has 2 divisors, whose sum is σ = 72518220. Its totient is φ = 72518218.

The previous prime is 72518213. The next prime is 72518249. The reversal of 72518219 is 91281527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72518219 - 2¹⁶ = 72452683 is a prime.

It is a super-2 number, since 2×72518219² = 10517784173863922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72518213) 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, 36259109 + 36259110.

It is an arithmetic number, because the mean of its divisors is an integer number (36259110).

Almost surely, 2^72518219 is an apocalyptic number.

72518219 is a deficient number, since it is larger than the sum of its proper divisors (1).

72518219 is an equidigital number, since it uses as much as digits as its factorization.

72518219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 35.

The square root of 72518219 is about 8515.7629722768. The cubic root of 72518219 is about 417.0124711845.

The spelling of 72518219 in words is "seventy-two million, five hundred eighteen thousand, two hundred nineteen".