55286207 has 2 divisors, whose sum is σ = 55286208. Its totient is φ = 55286206.

The previous prime is 55286183. The next prime is 55286221. The reversal of 55286207 is 70268255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55286207 - 2¹² = 55282111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55286107) 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, 27643103 + 27643104.

It is an arithmetic number, because the mean of its divisors is an integer number (27643104).

Almost surely, 2^55286207 is an apocalyptic number.

55286207 is a deficient number, since it is larger than the sum of its proper divisors (1).

55286207 is an equidigital number, since it uses as much as digits as its factorization.

55286207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 55286207 is about 7435.4695211533. The cubic root of 55286207 is about 380.9537606664.

The spelling of 55286207 in words is "fifty-five million, two hundred eighty-six thousand, two hundred seven".