56426321 has 8 divisors (see below), whose sum is σ = 64663104. Its totient is φ = 48233520.

The previous prime is 56426297. The next prime is 56426323. The reversal of 56426321 is 12362465.

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 56426321 - 2¹⁰ = 56425297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56426323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8195 + ... + 13416.

It is an arithmetic number, because the mean of its divisors is an integer number (8082888).

Almost surely, 2^56426321 is an apocalyptic number.

It is an amenable number.

56426321 is a deficient number, since it is larger than the sum of its proper divisors (8236783).

56426321 is a wasteful number, since it uses less digits than its factorization.

56426321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21991.

The product of its digits is 8640, while the sum is 29.

The square root of 56426321 is about 7511.7455361587. The cubic root of 56426321 is about 383.5546436406.

Adding to 56426321 its reverse (12362465), we get a palindrome (68788786).

The spelling of 56426321 in words is "fifty-six million, four hundred twenty-six thousand, three hundred twenty-one".