56159233 has 4 divisors (see below), whose sum is σ = 60479188. Its totient is φ = 51839280.

The previous prime is 56159227. The next prime is 56159237. The reversal of 56159233 is 33295165.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33295165 = 5 ⋅6659033.

It can be written as a sum of positive squares in 2 ways, for example, as 24720784 + 31438449 = 4972^2 + 5607^2 .

It is a cyclic number.

It is not a de Polignac number, because 56159233 - 2²¹ = 54062081 is a prime.

It is a super-2 number, since 2×56159233² = 6307718902296578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56159237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2159958 + ... + 2159983.

It is an arithmetic number, because the mean of its divisors is an integer number (15119797).

Almost surely, 2^56159233 is an apocalyptic number.

It is an amenable number.

56159233 is a deficient number, since it is larger than the sum of its proper divisors (4319955).

56159233 is a wasteful number, since it uses less digits than its factorization.

56159233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319954.

The product of its digits is 24300, while the sum is 34.

The square root of 56159233 is about 7493.9464236142. The cubic root of 56159233 is about 382.9485145544.

The spelling of 56159233 in words is "fifty-six million, one hundred fifty-nine thousand, two hundred thirty-three".