55227239 has 2 divisors, whose sum is σ = 55227240. Its totient is φ = 55227238.

The previous prime is 55227233. The next prime is 55227299. The reversal of 55227239 is 93272255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55227239 - 2¹² = 55223143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55227199 and 55227208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55227233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27613619 + 27613620.

It is an arithmetic number, because the mean of its divisors is an integer number (27613620).

Almost surely, 2^55227239 is an apocalyptic number.

55227239 is a deficient number, since it is larger than the sum of its proper divisors (1).

55227239 is an equidigital number, since it uses as much as digits as its factorization.

55227239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 35.

The square root of 55227239 is about 7431.5031453939. The cubic root of 55227239 is about 380.8182713403.

The spelling of 55227239 in words is "fifty-five million, two hundred twenty-seven thousand, two hundred thirty-nine".