56335145221 has 8 divisors (see below), whose sum is σ = 57765417920. Its totient is φ = 54922209408.

The previous prime is 56335145203. The next prime is 56335145239. The reversal of 56335145221 is 12254153365.

It is an interprime number because it is at equal distance from previous prime (56335145203) and next prime (56335145239).

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 56335145221 - 2⁵ = 56335145189 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 (56335145201) 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, 4327641 + ... + 4340638.

It is an arithmetic number, because the mean of its divisors is an integer number (7220677240).

Almost surely, 2^56335145221 is an apocalyptic number.

It is an amenable number.

56335145221 is a deficient number, since it is larger than the sum of its proper divisors (1430272699).

56335145221 is an equidigital number, since it uses as much as digits as its factorization.

56335145221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8668443.

The product of its digits is 108000, while the sum is 37.

Adding to 56335145221 its reverse (12254153365), we get a palindrome (68589298586).

The spelling of 56335145221 in words is "fifty-six billion, three hundred thirty-five million, one hundred forty-five thousand, two hundred twenty-one".