56352221 has 8 divisors (see below), whose sum is σ = 58105344. Its totient is φ = 54611280.

The previous prime is 56352217. The next prime is 56352239. The reversal of 56352221 is 12225365.

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 56352221 - 2² = 56352217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56352521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6836 + ... + 12626.

It is an arithmetic number, because the mean of its divisors is an integer number (7263168).

Almost surely, 2^56352221 is an apocalyptic number.

It is an amenable number.

56352221 is a deficient number, since it is larger than the sum of its proper divisors (1753123).

56352221 is a wasteful number, since it uses less digits than its factorization.

56352221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6091.

The product of its digits is 3600, while the sum is 26.

The square root of 56352221 is about 7506.8116401039. The cubic root of 56352221 is about 383.3866732749.

Adding to 56352221 its reverse (12225365), we get a palindrome (68577586).

The spelling of 56352221 in words is "fifty-six million, three hundred fifty-two thousand, two hundred twenty-one".