72573481 has 8 divisors (see below), whose sum is σ = 73956960. Its totient is φ = 71195232.

The previous prime is 72573467. The next prime is 72573497. The reversal of 72573481 is 18437527.

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

It is a cyclic number.

It is not a de Polignac number, because 72573481 - 2⁷ = 72573353 is a prime.

It is a super-2 number, since 2×72573481² = 10533820288914722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72573481.

It is not an unprimeable number, because it can be changed into a prime (72573401) 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, 36981 + ... + 38893.

It is an arithmetic number, because the mean of its divisors is an integer number (9244620).

Almost surely, 2^72573481 is an apocalyptic number.

It is an amenable number.

72573481 is a deficient number, since it is larger than the sum of its proper divisors (1383479).

72573481 is a wasteful number, since it uses less digits than its factorization.

72573481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615.

The product of its digits is 47040, while the sum is 37.

The square root of 72573481 is about 8519.0070430773. The cubic root of 72573481 is about 417.1183714316.

The spelling of 72573481 in words is "seventy-two million, five hundred seventy-three thousand, four hundred eighty-one".