56891023 has 4 divisors (see below), whose sum is σ = 65018320. Its totient is φ = 48763728.

The previous prime is 56890987. The next prime is 56891041. The reversal of 56891023 is 32019865.

56891023 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 an emirpimes, since its reverse is a distinct semiprime: 32019865 = 5 ⋅6403973.

It is a cyclic number.

It is not a de Polignac number, because 56891023 - 2⁹ = 56890511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56891023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56891053) 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, 4063638 + ... + 4063651.

It is an arithmetic number, because the mean of its divisors is an integer number (16254580).

Almost surely, 2^56891023 is an apocalyptic number.

56891023 is a deficient number, since it is larger than the sum of its proper divisors (8127297).

56891023 is an equidigital number, since it uses as much as digits as its factorization.

56891023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8127296.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 56891023 is about 7542.6138042458. The cubic root of 56891023 is about 384.6046946065.

The spelling of 56891023 in words is "fifty-six million, eight hundred ninety-one thousand, twenty-three".