72580145 has 16 divisors (see below), whose sum is σ = 98081280. Its totient is φ = 51081600.

The previous prime is 72580139. The next prime is 72580147. The reversal of 72580145 is 54108527.

It is not a de Polignac number, because 72580145 - 2⁸ = 72579889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72580147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19580 + ... + 22989.

It is an arithmetic number, because the mean of its divisors is an integer number (6130080).

Almost surely, 2^72580145 is an apocalyptic number.

It is an amenable number.

72580145 is a deficient number, since it is larger than the sum of its proper divisors (25501135).

72580145 is a wasteful number, since it uses less digits than its factorization.

72580145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42616.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 72580145 is about 8519.3981594946. The cubic root of 72580145 is about 417.1311382242.

The spelling of 72580145 in words is "seventy-two million, five hundred eighty thousand, one hundred forty-five".