55426223 has 2 divisors, whose sum is σ = 55426224. Its totient is φ = 55426222.

The previous prime is 55426213. The next prime is 55426237. The reversal of 55426223 is 32262455.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55426223 - 2¹⁰ = 55425199 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55426213) 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 as a sum of consecutive naturals, namely, 27713111 + 27713112.

It is an arithmetic number, because the mean of its divisors is an integer number (27713112).

Almost surely, 2^55426223 is an apocalyptic number.

55426223 is a deficient number, since it is larger than the sum of its proper divisors (1).

55426223 is an equidigital number, since it uses as much as digits as its factorization.

55426223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 29.

The square root of 55426223 is about 7444.8789781970. The cubic root of 55426223 is about 381.2750864797.

Adding to 55426223 its reverse (32262455), we get a palindrome (87688678).

The spelling of 55426223 in words is "fifty-five million, four hundred twenty-six thousand, two hundred twenty-three".