55226219 has 2 divisors, whose sum is σ = 55226220. Its totient is φ = 55226218.

The previous prime is 55226203. The next prime is 55226257. The reversal of 55226219 is 91262255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55226219 - 2⁴ = 55226203 is a prime.

It is a super-2 number, since 2×55226219² = 6099870530071922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55226279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27613109 + 27613110.

It is an arithmetic number, because the mean of its divisors is an integer number (27613110).

Almost surely, 2^55226219 is an apocalyptic number.

55226219 is a deficient number, since it is larger than the sum of its proper divisors (1).

55226219 is an equidigital number, since it uses as much as digits as its factorization.

55226219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 32.

The square root of 55226219 is about 7431.4345183148. The cubic root of 55226219 is about 380.8159268630.

The spelling of 55226219 in words is "fifty-five million, two hundred twenty-six thousand, two hundred nineteen".