55722223 has 2 divisors, whose sum is σ = 55722224. Its totient is φ = 55722222.

The previous prime is 55722203. The next prime is 55722229. The reversal of 55722223 is 32222755.

55722223 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 55722223 - 2⁹ = 55721711 is a prime.

It is a super-2 number, since 2×55722223² = 6209932272123458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55722191 and 55722200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55722229) 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, 27861111 + 27861112.

It is an arithmetic number, because the mean of its divisors is an integer number (27861112).

Almost surely, 2^55722223 is an apocalyptic number.

55722223 is a deficient number, since it is larger than the sum of its proper divisors (1).

55722223 is an equidigital number, since it uses as much as digits as its factorization.

55722223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 28.

The square root of 55722223 is about 7464.7319442831. The cubic root of 55722223 is about 381.9526064390.

Adding to 55722223 its reverse (32222755), we get a palindrome (87944978).

It can be divided in two parts, 55722 and 223, that added together give a triangular number (55945 = T₃₃₄).

The spelling of 55722223 in words is "fifty-five million, seven hundred twenty-two thousand, two hundred twenty-three".