55405220323 has 2 divisors, whose sum is σ = 55405220324. Its totient is φ = 55405220322.

The previous prime is 55405220291. The next prime is 55405220359. The reversal of 55405220323 is 32302250455.

55405220323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55405220323 - 2⁵ = 55405220291 is a prime.

It is not a weakly prime, because it can be changed into another prime (55405220623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27702610161 + 27702610162.

It is an arithmetic number, because the mean of its divisors is an integer number (27702610162).

Almost surely, 2^55405220323 is an apocalyptic number.

55405220323 is a deficient number, since it is larger than the sum of its proper divisors (1).

55405220323 is an equidigital number, since it uses as much as digits as its factorization.

55405220323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 31.

Adding to 55405220323 its reverse (32302250455), we get a palindrome (87707470778).

The spelling of 55405220323 in words is "fifty-five billion, four hundred five million, two hundred twenty thousand, three hundred twenty-three".