55229513 has 2 divisors, whose sum is σ = 55229514. Its totient is φ = 55229512.

The previous prime is 55229497. The next prime is 55229519. The reversal of 55229513 is 31592255.

55229513 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 can be written as a sum of positive squares in only one way, i.e., 54804409 + 425104 = 7403^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 55229513 - 2⁴ = 55229497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55229513.

It is not a weakly prime, because it can be changed into another prime (55229519) 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, 27614756 + 27614757.

It is an arithmetic number, because the mean of its divisors is an integer number (27614757).

Almost surely, 2^55229513 is an apocalyptic number.

It is an amenable number.

55229513 is a deficient number, since it is larger than the sum of its proper divisors (1).

55229513 is an equidigital number, since it uses as much as digits as its factorization.

55229513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13500, while the sum is 32.

The square root of 55229513 is about 7431.6561411303. The cubic root of 55229513 is about 380.8234980417.

The spelling of 55229513 in words is "fifty-five million, two hundred twenty-nine thousand, five hundred thirteen".