56001331 has 4 divisors (see below), whose sum is σ = 56497032. Its totient is φ = 55505632.

The previous prime is 56001329. The next prime is 56001359. The reversal of 56001331 is 13310065.

56001331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 56001331 - 2¹ = 56001329 is a prime.

It is a super-2 number, since 2×56001331² = 6272298147543122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56001299 and 56001308.

It is not an unprimeable number, because it can be changed into a prime (56001431) 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 3 ways as a sum of consecutive naturals, for example, 247681 + ... + 247906.

It is an arithmetic number, because the mean of its divisors is an integer number (14124258).

Almost surely, 2^56001331 is an apocalyptic number.

56001331 is a deficient number, since it is larger than the sum of its proper divisors (495701).

56001331 is a wasteful number, since it uses less digits than its factorization.

56001331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495700.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 56001331 is about 7483.4037041977. The cubic root of 56001331 is about 382.5892676155.

Adding to 56001331 its reverse (13310065), we get a palindrome (69311396).

The spelling of 56001331 in words is "fifty-six million, one thousand, three hundred thirty-one".