56887189 has 4 divisors (see below), whose sum is σ = 57607360. Its totient is φ = 56167020.

The previous prime is 56887169. The next prime is 56887199. The reversal of 56887189 is 98178865.

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 a de Polignac number, because none of the positive numbers 2^k-56887189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56887169) 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, 359967 + ... + 360124.

It is an arithmetic number, because the mean of its divisors is an integer number (14401840).

Almost surely, 2^56887189 is an apocalyptic number.

It is an amenable number.

56887189 is a deficient number, since it is larger than the sum of its proper divisors (720171).

56887189 is an equidigital number, since it uses as much as digits as its factorization.

56887189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720170.

The product of its digits is 967680, while the sum is 52.

The square root of 56887189 is about 7542.3596440371. The cubic root of 56887189 is about 384.5960546521.

The spelling of 56887189 in words is "fifty-six million, eight hundred eighty-seven thousand, one hundred eighty-nine".