56842889 has 4 divisors (see below), whose sum is σ = 59834640. Its totient is φ = 53851140.

The previous prime is 56842859. The next prime is 56842931. The reversal of 56842889 is 98824865.

56842889 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98824865 = 5 ⋅19764973.

It is a cyclic number.

It is not a de Polignac number, because 56842889 - 2¹⁶ = 56777353 is a prime.

It is a super-2 number, since 2×56842889² = 6462228059732642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56842829) 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, 1495847 + ... + 1495884.

It is an arithmetic number, because the mean of its divisors is an integer number (14958660).

Almost surely, 2^56842889 is an apocalyptic number.

It is an amenable number.

56842889 is a deficient number, since it is larger than the sum of its proper divisors (2991751).

56842889 is a wasteful number, since it uses less digits than its factorization.

56842889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2991750.

The product of its digits is 1105920, while the sum is 50.

The square root of 56842889 is about 7539.4223253509. The cubic root of 56842889 is about 384.4961960253.

The spelling of 56842889 in words is "fifty-six million, eight hundred forty-two thousand, eight hundred eighty-nine".