5656123223 has 4 divisors (see below), whose sum is σ = 5902041648. Its totient is φ = 5410204800.

The previous prime is 5656123219. The next prime is 5656123237. The reversal of 5656123223 is 3223216565.

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

It is a cyclic number.

It is not a de Polignac number, because 5656123223 - 2² = 5656123219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5656122223) 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, 122959178 + ... + 122959223.

It is an arithmetic number, because the mean of its divisors is an integer number (1475510412).

Almost surely, 2^5656123223 is an apocalyptic number.

5656123223 is a deficient number, since it is larger than the sum of its proper divisors (245918425).

5656123223 is a wasteful number, since it uses less digits than its factorization.

5656123223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245918424.

The product of its digits is 64800, while the sum is 35.

The square root of 5656123223 is about 75207.2019357189. The cubic root of 5656123223 is about 1781.7206800021.

Adding to 5656123223 its reverse (3223216565), we get a palindrome (8879339788).

The spelling of 5656123223 in words is "five billion, six hundred fifty-six million, one hundred twenty-three thousand, two hundred twenty-three".