56008831 has 4 divisors (see below), whose sum is σ = 57940200. Its totient is φ = 54077464.

The previous prime is 56008801. The next prime is 56008837. The reversal of 56008831 is 13880065.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13880065 = 5 ⋅2776013.

It is a cyclic number.

It is not a de Polignac number, because 56008831 - 2¹³ = 56000639 is a prime.

It is a super-2 number, since 2×56008831² = 6273978299973122, 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 = 56008793 and 56008802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56008837) 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, 965641 + ... + 965698.

It is an arithmetic number, because the mean of its divisors is an integer number (14485050).

Almost surely, 2^56008831 is an apocalyptic number.

56008831 is a deficient number, since it is larger than the sum of its proper divisors (1931369).

56008831 is a wasteful number, since it uses less digits than its factorization.

56008831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931368.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 56008831 is about 7483.9047962945. The cubic root of 56008831 is about 382.6063463251.

Adding to 56008831 its reverse (13880065), we get a palindrome (69888896).

The spelling of 56008831 in words is "fifty-six million, eight thousand, eight hundred thirty-one".