55305212 has 6 divisors (see below), whose sum is σ = 96784128. Its totient is φ = 27652604.

The previous prime is 55305203. The next prime is 55305221. The reversal of 55305212 is 21250355.

It is an interprime number because it is at equal distance from previous prime (55305203) and next prime (55305221).

It is a congruent number.

It is an unprimeable number.

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, 6913148 + ... + 6913155.

It is an arithmetic number, because the mean of its divisors is an integer number (16130688).

Almost surely, 2^55305212 is an apocalyptic number.

It is an amenable number.

55305212 is a deficient number, since it is larger than the sum of its proper divisors (41478916).

55305212 is a wasteful number, since it uses less digits than its factorization.

55305212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13826307 (or 13826305 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 55305212 is about 7436.7474073011. The cubic root of 55305212 is about 380.9974074587.

Adding to 55305212 its reverse (21250355), we get a palindrome (76555567).

The spelling of 55305212 in words is "fifty-five million, three hundred five thousand, two hundred twelve".