56463221 has 8 divisors (see below), whose sum is σ = 58331064. Its totient is φ = 54613440.

The previous prime is 56463163. The next prime is 56463241. The reversal of 56463221 is 12236465.

It can be written as a sum of positive squares in 4 ways, for example, as 36168196 + 20295025 = 6014^2 + 4505^2 .

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 56463221 - 2¹⁸ = 56201077 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 (56463241) 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, 1991 + ... + 10811.

It is an arithmetic number, because the mean of its divisors is an integer number (7291383).

Almost surely, 2^56463221 is an apocalyptic number.

It is an amenable number.

56463221 is a deficient number, since it is larger than the sum of its proper divisors (1867843).

56463221 is a wasteful number, since it uses less digits than its factorization.

56463221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9031.

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

The square root of 56463221 is about 7514.2012882275. The cubic root of 56463221 is about 383.6382339584.

Adding to 56463221 its reverse (12236465), we get a palindrome (68699686).

The spelling of 56463221 in words is "fifty-six million, four hundred sixty-three thousand, two hundred twenty-one".