72512443 has 2 divisors, whose sum is σ = 72512444. Its totient is φ = 72512442.

The previous prime is 72512437. The next prime is 72512459. The reversal of 72512443 is 34421527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72512443 - 2⁵ = 72512411 is a prime.

It is not a weakly prime, because it can be changed into another prime (72512423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36256221 + 36256222.

It is an arithmetic number, because the mean of its divisors is an integer number (36256222).

Almost surely, 2^72512443 is an apocalyptic number.

72512443 is a deficient number, since it is larger than the sum of its proper divisors (1).

72512443 is an equidigital number, since it uses as much as digits as its factorization.

72512443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 28.

The square root of 72512443 is about 8515.4238297339. The cubic root of 72512443 is about 417.0013993554.

The spelling of 72512443 in words is "seventy-two million, five hundred twelve thousand, four hundred forty-three".