72450443 has 4 divisors (see below), whose sum is σ = 78023568. Its totient is φ = 66877320.

The previous prime is 72450419. The next prime is 72450461. The reversal of 72450443 is 34405427.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72450443 - 2¹² = 72446347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72450473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2786543 + ... + 2786568.

It is an arithmetic number, because the mean of its divisors is an integer number (19505892).

Almost surely, 2^72450443 is an apocalyptic number.

72450443 is a deficient number, since it is larger than the sum of its proper divisors (5573125).

72450443 is a wasteful number, since it uses less digits than its factorization.

72450443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5573124.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 72450443 is about 8511.7825982575. The cubic root of 72450443 is about 416.8825164997.

The spelling of 72450443 in words is "seventy-two million, four hundred fifty thousand, four hundred forty-three".