56605121201 has 4 divisors (see below), whose sum is σ = 56612196900. Its totient is φ = 56598045504.

The previous prime is 56605121189. The next prime is 56605121231. The reversal of 56605121201 is 10212150665.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39015730576 + 17589390625 = 197524^2 + 132625^2 .

It is a cyclic number.

It is not a de Polignac number, because 56605121201 - 2⁶ = 56605121137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56605121231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3525836 + ... + 3541853.

It is an arithmetic number, because the mean of its divisors is an integer number (14153049225).

Almost surely, 2^56605121201 is an apocalyptic number.

It is an amenable number.

56605121201 is a deficient number, since it is larger than the sum of its proper divisors (7075699).

56605121201 is an equidigital number, since it uses as much as digits as its factorization.

56605121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7075698.

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 56605121201 its reverse (10212150665), we get a palindrome (66817271866).

The spelling of 56605121201 in words is "fifty-six billion, six hundred five million, one hundred twenty-one thousand, two hundred one".