72239507 has 2 divisors, whose sum is σ = 72239508. Its totient is φ = 72239506.

The previous prime is 72239473. The next prime is 72239533. The reversal of 72239507 is 70593227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72239507 - 2¹⁶ = 72173971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72239537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36119753 + 36119754.

It is an arithmetic number, because the mean of its divisors is an integer number (36119754).

Almost surely, 2^72239507 is an apocalyptic number.

72239507 is a deficient number, since it is larger than the sum of its proper divisors (1).

72239507 is an equidigital number, since it uses as much as digits as its factorization.

72239507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 72239507 is about 8499.3827422937. The cubic root of 72239507 is about 416.4775453903.

The spelling of 72239507 in words is "seventy-two million, two hundred thirty-nine thousand, five hundred seven".