56897189 has 4 divisors (see below), whose sum is σ = 56923200. Its totient is φ = 56871180.

The previous prime is 56897179. The next prime is 56897207. The reversal of 56897189 is 98179865.

56897189 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 56897189 - 2⁴ = 56897173 is a prime.

It is a super-2 number, since 2×56897189² = 6474580232203442, which contains 22 as substring.

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 56897189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56897179) 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, 9389 + ... + 14210.

It is an arithmetic number, because the mean of its divisors is an integer number (14230800).

Almost surely, 2^56897189 is an apocalyptic number.

It is an amenable number.

56897189 is a deficient number, since it is larger than the sum of its proper divisors (26011).

56897189 is a wasteful number, since it uses less digits than its factorization.

56897189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26010.

The product of its digits is 1088640, while the sum is 53.

The square root of 56897189 is about 7543.0225374183. The cubic root of 56897189 is about 384.6185889302.

The spelling of 56897189 in words is "fifty-six million, eight hundred ninety-seven thousand, one hundred eighty-nine".