1572072001 has 2 divisors, whose sum is σ = 1572072002. Its totient is φ = 1572072000.

The previous prime is 1572071999. The next prime is 1572072013. The reversal of 1572072001 is 1002702751.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1494209025 + 77862976 = 38655^2 + 8824^2 .

It is a cyclic number.

It is not a de Polignac number, because 1572072001 - 2¹ = 1572071999 is a prime.

Together with 1572071999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1572072091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786036000 + 786036001.

It is an arithmetic number, because the mean of its divisors is an integer number (786036001).

Almost surely, 2^1572072001 is an apocalyptic number.

It is an amenable number.

1572072001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1572072001 is an equidigital number, since it uses as much as digits as its factorization.

1572072001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 1572072001 is about 39649.3631853022. The cubic root of 1572072001 is about 1162.7619483853.

Adding to 1572072001 its reverse (1002702751), we get a palindrome (2574774752).

The spelling of 1572072001 in words is "one billion, five hundred seventy-two million, seventy-two thousand, one".