55205212 has 12 divisors (see below), whose sum is σ = 99940680. Its totient is φ = 26650736.

The previous prime is 55205207. The next prime is 55205243. The reversal of 55205212 is 21250255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237838 + ... + 238069.

It is an arithmetic number, because the mean of its divisors is an integer number (8328390).

Almost surely, 2^55205212 is an apocalyptic number.

It is an amenable number.

55205212 is a deficient number, since it is larger than the sum of its proper divisors (44735468).

55205212 is a wasteful number, since it uses less digits than its factorization.

55205212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475940 (or 475938 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 55205212 is about 7430.0209959326. The cubic root of 55205212 is about 380.7676357019.

Adding to 55205212 its reverse (21250255), we get a palindrome (76455467).

The spelling of 55205212 in words is "fifty-five million, two hundred five thousand, two hundred twelve".