56036221 has 8 divisors (see below), whose sum is σ = 57153600. Its totient is φ = 54930048.

The previous prime is 56036219. The next prime is 56036237. The reversal of 56036221 is 12263065.

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 56036221 - 2¹ = 56036219 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 (56036021) 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, 7680 + ... + 13078.

It is an arithmetic number, because the mean of its divisors is an integer number (7144200).

Almost surely, 2^56036221 is an apocalyptic number.

It is an amenable number.

56036221 is a deficient number, since it is larger than the sum of its proper divisors (1117379).

56036221 is a wasteful number, since it uses less digits than its factorization.

56036221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5603.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 56036221 is about 7485.7344997001. The cubic root of 56036221 is about 382.6687048248.

Adding to 56036221 its reverse (12263065), we get a palindrome (68299286).

The spelling of 56036221 in words is "fifty-six million, thirty-six thousand, two hundred twenty-one".