72455009 has 8 divisors (see below), whose sum is σ = 80382240. Its totient is φ = 64751200.

The previous prime is 72454973. The next prime is 72455011. The reversal of 72455009 is 90055427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72455009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72455069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55172 + ... + 56469.

It is an arithmetic number, because the mean of its divisors is an integer number (10047780).

Almost surely, 2^72455009 is an apocalyptic number.

It is an amenable number.

72455009 is a deficient number, since it is larger than the sum of its proper divisors (7927231).

72455009 is a wasteful number, since it uses less digits than its factorization.

72455009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111711.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 72455009 is about 8512.0508104686. The cubic root of 72455009 is about 416.8912739598.

The spelling of 72455009 in words is "seventy-two million, four hundred fifty-five thousand, nine".