56144689 has 4 divisors (see below), whose sum is σ = 57955840. Its totient is φ = 54333540.

The previous prime is 56144687. The next prime is 56144707. The reversal of 56144689 is 98644165.

56144689 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.

It is a cyclic number.

It is not a de Polignac number, because 56144689 - 2¹ = 56144687 is a prime.

It is a super-2 number, since 2×56144689² = 6304452205813442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56144687) 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, 905529 + ... + 905590.

It is an arithmetic number, because the mean of its divisors is an integer number (14488960).

Almost surely, 2^56144689 is an apocalyptic number.

It is an amenable number.

56144689 is a deficient number, since it is larger than the sum of its proper divisors (1811151).

56144689 is a wasteful number, since it uses less digits than its factorization.

56144689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811150.

The product of its digits is 207360, while the sum is 43.

The square root of 56144689 is about 7492.9759775406. The cubic root of 56144689 is about 382.9154533000.

The spelling of 56144689 in words is "fifty-six million, one hundred forty-four thousand, six hundred eighty-nine".