55345223 has 2 divisors, whose sum is σ = 55345224. Its totient is φ = 55345222.

The previous prime is 55345211. The next prime is 55345237. The reversal of 55345223 is 32254355.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55345223 - 2⁶ = 55345159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55345243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27672611 + 27672612.

It is an arithmetic number, because the mean of its divisors is an integer number (27672612).

Almost surely, 2^55345223 is an apocalyptic number.

55345223 is a deficient number, since it is larger than the sum of its proper divisors (1).

55345223 is an equidigital number, since it uses as much as digits as its factorization.

55345223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 29.

The square root of 55345223 is about 7439.4370082688. The cubic root of 55345223 is about 381.0892638560.

Adding to 55345223 its reverse (32254355), we get a palindrome (87599578).

The spelling of 55345223 in words is "fifty-five million, three hundred forty-five thousand, two hundred twenty-three".