72442511 has 2 divisors, whose sum is σ = 72442512. Its totient is φ = 72442510.

The previous prime is 72442481. The next prime is 72442519. The reversal of 72442511 is 11524427.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72442511 - 2²² = 68248207 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72442519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36221255 + 36221256.

It is an arithmetic number, because the mean of its divisors is an integer number (36221256).

Almost surely, 2^72442511 is an apocalyptic number.

72442511 is a deficient number, since it is larger than the sum of its proper divisors (1).

72442511 is an equidigital number, since it uses as much as digits as its factorization.

72442511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 26.

The square root of 72442511 is about 8511.3166431522. The cubic root of 72442511 is about 416.8673022711.

Adding to 72442511 its reverse (11524427), we get a palindrome (83966938).

The spelling of 72442511 in words is "seventy-two million, four hundred forty-two thousand, five hundred eleven".