5656011121 has 16 divisors (see below), whose sum is σ = 5973214464. Its totient is φ = 5344948224.

The previous prime is 5656011113. The next prime is 5656011133. The reversal of 5656011121 is 1211106565.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5656011121 - 2³ = 5656011113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5656011121.

It is not an unprimeable number, because it can be changed into a prime (5656011521) 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 in 15 ways as a sum of consecutive naturals, for example, 1499580 + ... + 1503346.

It is an arithmetic number, because the mean of its divisors is an integer number (373325904).

Almost surely, 2^5656011121 is an apocalyptic number.

It is an amenable number.

5656011121 is a deficient number, since it is larger than the sum of its proper divisors (317203343).

5656011121 is a wasteful number, since it uses less digits than its factorization.

5656011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4560.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 5656011121 is about 75206.4566443600. The cubic root of 5656011121 is about 1781.7089089377.

Adding to 5656011121 its reverse (1211106565), we get a palindrome (6867117686).

The spelling of 5656011121 in words is "five billion, six hundred fifty-six million, eleven thousand, one hundred twenty-one".