56301221 has 8 divisors (see below), whose sum is σ = 56881440. Its totient is φ = 55724368.

The previous prime is 56301197. The next prime is 56301251. The reversal of 56301221 is 12210365.

56301221 = 164² + 165² + ... + 557².

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 56301221 - 2¹⁸ = 56039077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56301193 and 56301202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56301251) 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, 44090 + ... + 45348.

It is an arithmetic number, because the mean of its divisors is an integer number (7110180).

Almost surely, 2^56301221 is an apocalyptic number.

It is an amenable number.

56301221 is a deficient number, since it is larger than the sum of its proper divisors (580219).

56301221 is a wasteful number, since it uses less digits than its factorization.

56301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 56301221 is about 7503.4139563268. The cubic root of 56301221 is about 383.2709805745.

Adding to 56301221 its reverse (12210365), we get a palindrome (68511586).

The spelling of 56301221 in words is "fifty-six million, three hundred one thousand, two hundred twenty-one".