55101223 has 2 divisors, whose sum is σ = 55101224. Its totient is φ = 55101222.

The previous prime is 55101217. The next prime is 55101227. The reversal of 55101223 is 32210155.

55101223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55101223 - 2⁹ = 55100711 is a prime.

It is a super-2 number, since 2×55101223² = 6072289552191458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55101223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55101227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27550611 + 27550612.

It is an arithmetic number, because the mean of its divisors is an integer number (27550612).

Almost surely, 2^55101223 is an apocalyptic number.

55101223 is a deficient number, since it is larger than the sum of its proper divisors (1).

55101223 is an equidigital number, since it uses as much as digits as its factorization.

55101223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 55101223 is about 7423.0198032876. The cubic root of 55101223 is about 380.5284038604.

Adding to 55101223 its reverse (32210155), we get a palindrome (87311378).

The spelling of 55101223 in words is "fifty-five million, one hundred one thousand, two hundred twenty-three".