72057572 has 6 divisors (see below), whose sum is σ = 126100758. Its totient is φ = 36028784.

The previous prime is 72057571. The next prime is 72057589. The reversal of 72057572 is 27575027.

It can be written as a sum of positive squares in only one way, i.e., 44009956 + 28047616 = 6634^2 + 5296^2 .

It is not an unprimeable number, because it can be changed into a prime (72057571) 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 as a sum of consecutive naturals, namely, 9007193 + ... + 9007200.

It is an arithmetic number, because the mean of its divisors is an integer number (21016793).

Almost surely, 2^72057572 is an apocalyptic number.

It is an amenable number.

72057572 is a deficient number, since it is larger than the sum of its proper divisors (54043186).

72057572 is a wasteful number, since it uses less digits than its factorization.

72057572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18014397 (or 18014395 counting only the distinct ones).

The product of its (nonzero) digits is 34300, while the sum is 35.

The square root of 72057572 is about 8488.6731589807. The cubic root of 72057572 is about 416.1276189446.

The spelling of 72057572 in words is "seventy-two million, fifty-seven thousand, five hundred seventy-two".