56543321 has 8 divisors (see below), whose sum is σ = 57176064. Its totient is φ = 55913760.

The previous prime is 56543317. The next prime is 56543329. The reversal of 56543321 is 12334565.

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 56543321 - 2² = 56543317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56543329) 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, 54221 + ... + 55253.

It is an arithmetic number, because the mean of its divisors is an integer number (7147008).

Almost surely, 2^56543321 is an apocalyptic number.

It is an amenable number.

56543321 is a deficient number, since it is larger than the sum of its proper divisors (632743).

56543321 is a wasteful number, since it uses less digits than its factorization.

56543321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591.

The product of its digits is 10800, while the sum is 29.

The square root of 56543321 is about 7519.5293070777. The cubic root of 56543321 is about 383.8195608605.

Adding to 56543321 its reverse (12334565), we get a palindrome (68877886).

The spelling of 56543321 in words is "fifty-six million, five hundred forty-three thousand, three hundred twenty-one".