55641212 has 12 divisors (see below), whose sum is σ = 106224216. Its totient is φ = 25291440.

The previous prime is 55641199. The next prime is 55641233. The reversal of 55641212 is 21214655.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632243 + ... + 632330.

It is an arithmetic number, because the mean of its divisors is an integer number (8852018).

Almost surely, 2^55641212 is an apocalyptic number.

It is an amenable number.

55641212 is a deficient number, since it is larger than the sum of its proper divisors (50583004).

55641212 is a wasteful number, since it uses less digits than its factorization.

55641212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264588 (or 1264586 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 55641212 is about 7459.3037208576. The cubic root of 55641212 is about 381.7674177889.

Adding to 55641212 its reverse (21214655), we get a palindrome (76855867).

It can be divided in two parts, 5564 and 1212, that added together give a palindrome (6776).

The spelling of 55641212 in words is "fifty-five million, six hundred forty-one thousand, two hundred twelve".