55005229 has 2 divisors, whose sum is σ = 55005230. Its totient is φ = 55005228.

The previous prime is 55005227. The next prime is 55005239. The reversal of 55005229 is 92250055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54612100 + 393129 = 7390^2 + 627^2 .

It is a cyclic number.

It is not a de Polignac number, because 55005229 - 2¹ = 55005227 is a prime.

Together with 55005227, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 55005197 and 55005206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55005221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27502614 + 27502615.

It is an arithmetic number, because the mean of its divisors is an integer number (27502615).

Almost surely, 2^55005229 is an apocalyptic number.

It is an amenable number.

55005229 is a deficient number, since it is larger than the sum of its proper divisors (1).

55005229 is an equidigital number, since it uses as much as digits as its factorization.

55005229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 55005229 is about 7416.5510178249. The cubic root of 55005229 is about 380.3072975963.

The spelling of 55005229 in words is "fifty-five million, five thousand, two hundred twenty-nine".