72289111 has 2 divisors, whose sum is σ = 72289112. Its totient is φ = 72289110.

The previous prime is 72289103. The next prime is 72289159. The reversal of 72289111 is 11198227.

It is a weak prime.

It is an emirp because it is prime and its reverse (11198227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72289111 - 2³ = 72289103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72289411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36144555 + 36144556.

It is an arithmetic number, because the mean of its divisors is an integer number (36144556).

Almost surely, 2^72289111 is an apocalyptic number.

72289111 is a deficient number, since it is larger than the sum of its proper divisors (1).

72289111 is an equidigital number, since it uses as much as digits as its factorization.

72289111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 31.

The square root of 72289111 is about 8502.3003357915. The cubic root of 72289111 is about 416.5728497755.

The spelling of 72289111 in words is "seventy-two million, two hundred eighty-nine thousand, one hundred eleven".