555342340523221 has 8 divisors (see below), whose sum is σ = 556161629859360. Its totient is φ = 554523069307152.

The previous prime is 555342340523147. The next prime is 555342340523237. The reversal of 555342340523221 is 122325043243555.

It is a happy number.

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 555342340523221 - 2⁷ = 555342340523093 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 (555342340523281) 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, 57435751 + ... + 66404443.

It is an arithmetic number, because the mean of its divisors is an integer number (69520203732420).

Almost surely, 2^{555342340523221} is an apocalyptic number.

It is an amenable number.

555342340523221 is a deficient number, since it is larger than the sum of its proper divisors (819289336139).

555342340523221 is an equidigital number, since it uses as much as digits as its factorization.

555342340523221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9060035.

The product of its (nonzero) digits is 4320000, while the sum is 46.

Adding to 555342340523221 its reverse (122325043243555), we get a palindrome (677667383766776).

The spelling of 555342340523221 in words is "five hundred fifty-five trillion, three hundred forty-two billion, three hundred forty million, five hundred twenty-three thousand, two hundred twenty-one".