72573571 has 8 divisors (see below), whose sum is σ = 83009024. Its totient is φ = 62155080.

The previous prime is 72573569. The next prime is 72573577. The reversal of 72573571 is 17537527.

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 72573571 - 2¹ = 72573569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72573571.

It is not an unprimeable number, because it can be changed into a prime (72573577) 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, 6886 + ... + 13876.

It is an arithmetic number, because the mean of its divisors is an integer number (10376128).

Almost surely, 2^72573571 is an apocalyptic number.

72573571 is a deficient number, since it is larger than the sum of its proper divisors (10435453).

72573571 is a wasteful number, since it uses less digits than its factorization.

72573571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8481.

The product of its digits is 51450, while the sum is 37.

The square root of 72573571 is about 8519.0123253814. The cubic root of 72573571 is about 417.1185438574.

The spelling of 72573571 in words is "seventy-two million, five hundred seventy-three thousand, five hundred seventy-one".