1201001573 has 2 divisors, whose sum is σ = 1201001574. Its totient is φ = 1201001572.

The previous prime is 1201001551. The next prime is 1201001579. The reversal of 1201001573 is 3751001021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 863066884 + 337934689 = 29378^2 + 18383^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201001573 - 2⁶ = 1201001509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201001579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600500786 + 600500787.

It is an arithmetic number, because the mean of its divisors is an integer number (600500787).

Almost surely, 2^1201001573 is an apocalyptic number.

It is an amenable number.

1201001573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201001573 is an equidigital number, since it uses as much as digits as its factorization.

1201001573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 1201001573 is about 34655.4695971646. The cubic root of 1201001573 is about 1062.9541342260.

Adding to 1201001573 its reverse (3751001021), we get a palindrome (4952002594).

The spelling of 1201001573 in words is "one billion, two hundred one million, one thousand, five hundred seventy-three".