55612247 has 2 divisors, whose sum is σ = 55612248. Its totient is φ = 55612246.

The previous prime is 55612237. The next prime is 55612267. The reversal of 55612247 is 74221655.

55612247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55612247 - 2⁴ = 55612231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55612217) 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, 27806123 + 27806124.

It is an arithmetic number, because the mean of its divisors is an integer number (27806124).

Almost surely, 2^55612247 is an apocalyptic number.

55612247 is a deficient number, since it is larger than the sum of its proper divisors (1).

55612247 is an equidigital number, since it uses as much as digits as its factorization.

55612247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 32.

The square root of 55612247 is about 7457.3619330163. The cubic root of 55612247 is about 381.7011610690.

The spelling of 55612247 in words is "fifty-five million, six hundred twelve thousand, two hundred forty-seven".