55563212 has 24 divisors (see below), whose sum is σ = 99712704. Its totient is φ = 27078912.

The previous prime is 55563203. The next prime is 55563223. The reversal of 55563212 is 21236555.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62918 + ... + 63794.

It is an arithmetic number, because the mean of its divisors is an integer number (4154696).

Almost surely, 2^55563212 is an apocalyptic number.

It is an amenable number.

55563212 is a deficient number, since it is larger than the sum of its proper divisors (44149492).

55563212 is a wasteful number, since it uses less digits than its factorization.

55563212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265 (or 1263 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 55563212 is about 7454.0735172119. The cubic root of 55563212 is about 381.5889422613.

Adding to 55563212 its reverse (21236555), we get a palindrome (76799767).

The spelling of 55563212 in words is "fifty-five million, five hundred sixty-three thousand, two hundred twelve".