56085389 has 8 divisors (see below), whose sum is σ = 57195192. Its totient is φ = 54984960.

The previous prime is 56085383. The next prime is 56085409. The reversal of 56085389 is 98358065.

It can be written as a sum of positive squares in 4 ways, for example, as 18361225 + 37724164 = 4285^2 + 6142^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56085389 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 (56085383) 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, 10409 + ... + 14849.

It is an arithmetic number, because the mean of its divisors is an integer number (7149399).

Almost surely, 2^56085389 is an apocalyptic number.

It is an amenable number.

56085389 is a deficient number, since it is larger than the sum of its proper divisors (1109803).

56085389 is a wasteful number, since it uses less digits than its factorization.

56085389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4687.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 56085389 is about 7489.0178928882. The cubic root of 56085389 is about 382.7805940889.

The spelling of 56085389 in words is "fifty-six million, eighty-five thousand, three hundred eighty-nine".