56302321 has 4 divisors (see below), whose sum is σ = 58750272. Its totient is φ = 53854372.

The previous prime is 56302291. The next prime is 56302373. The reversal of 56302321 is 12320365.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12320365 = 5 ⋅2464073.

It is a cyclic number.

It is not a de Polignac number, because 56302321 - 2¹⁵ = 56269553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56302292 and 56302301.

It is not an unprimeable number, because it can be changed into a prime (56302121) 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, 1223941 + ... + 1223986.

It is an arithmetic number, because the mean of its divisors is an integer number (14687568).

Almost surely, 2^56302321 is an apocalyptic number.

It is an amenable number.

56302321 is a deficient number, since it is larger than the sum of its proper divisors (2447951).

56302321 is a wasteful number, since it uses less digits than its factorization.

56302321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447950.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 56302321 is about 7503.4872559364. The cubic root of 56302321 is about 383.2734766443.

Adding to 56302321 its reverse (12320365), we get a palindrome (68622686).

The spelling of 56302321 in words is "fifty-six million, three hundred two thousand, three hundred twenty-one".