56123389 has 8 divisors (see below), whose sum is σ = 64301120. Its totient is φ = 47985696.

The previous prime is 56123387. The next prime is 56123407. The reversal of 56123389 is 98332165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56123389 - 2¹ = 56123387 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 (56123387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6939 + ... + 12664.

It is an arithmetic number, because the mean of its divisors is an integer number (8037640).

Almost surely, 2^56123389 is an apocalyptic number.

It is an amenable number.

56123389 is a deficient number, since it is larger than the sum of its proper divisors (8177731).

56123389 is a wasteful number, since it uses less digits than its factorization.

56123389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20019.

The product of its digits is 38880, while the sum is 37.

The square root of 56123389 is about 7491.5545115817. The cubic root of 56123389 is about 382.8670240783.

The spelling of 56123389 in words is "fifty-six million, one hundred twenty-three thousand, three hundred eighty-nine".