561001201 has 16 divisors (see below), whose sum is σ = 620942400. Its totient is φ = 504705600.

The previous prime is 561001171. The next prime is 561001247. The reversal of 561001201 is 102100165.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 561001201 - 2¹³ = 560993009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561001271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25266 + ... + 41956.

It is an arithmetic number, because the mean of its divisors is an integer number (38808900).

Almost surely, 2^561001201 is an apocalyptic number.

It is an amenable number.

561001201 is a deficient number, since it is larger than the sum of its proper divisors (59941199).

561001201 is a wasteful number, since it uses less digits than its factorization.

561001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16800.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 561001201 is about 23685.4639177703. The cubic root of 561001201 is about 824.7479859571.

Adding to 561001201 its reverse (102100165), we get a palindrome (663101366).

The spelling of 561001201 in words is "five hundred sixty-one million, one thousand, two hundred one".