72361111 has 2 divisors, whose sum is σ = 72361112. Its totient is φ = 72361110.

The previous prime is 72361097. The next prime is 72361123. The reversal of 72361111 is 11116327.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72361111 - 2⁷ = 72360983 is a prime.

It is a super-2 number, since 2×72361111² = 10472260770308642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72361181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36180555 + 36180556.

It is an arithmetic number, because the mean of its divisors is an integer number (36180556).

Almost surely, 2^72361111 is an apocalyptic number.

72361111 is a deficient number, since it is larger than the sum of its proper divisors (1).

72361111 is an equidigital number, since it uses as much as digits as its factorization.

72361111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 22.

The square root of 72361111 is about 8506.5334302523. The cubic root of 72361111 is about 416.7111061579.

Adding to 72361111 its reverse (11116327), we get a palindrome (83477438).

The spelling of 72361111 in words is "seventy-two million, three hundred sixty-one thousand, one hundred eleven".