8001572 has 6 divisors (see below), whose sum is σ = 14002758. Its totient is φ = 4000784.

The previous prime is 8001571. The next prime is 8001589. The reversal of 8001572 is 2751008.

It can be written as a sum of positive squares in only one way, i.e., 6522916 + 1478656 = 2554^2 + 1216^2 .

It is not an unprimeable number, because it can be changed into a prime (8001571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000193 + ... + 1000200.

It is an arithmetic number, because the mean of its divisors is an integer number (2333793).

Almost surely, 2^8001572 is an apocalyptic number.

It is an amenable number.

8001572 is a deficient number, since it is larger than the sum of its proper divisors (6001186).

8001572 is a wasteful number, since it uses less digits than its factorization.

8001572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000397 (or 2000395 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 8001572 is about 2828.7050040610. The cubic root of 8001572 is about 200.0130991420.

The spelling of 8001572 in words is "eight million, one thousand, five hundred seventy-two".