55203243212 has 24 divisors (see below), whose sum is σ = 104050918272. Its totient is φ = 25474982400.

The previous prime is 55203243181. The next prime is 55203243223. The reversal of 55203243212 is 21234230255.

It is a super-2 number, since 2×55203243212² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340037 + ... + 475427.

It is an arithmetic number, because the mean of its divisors is an integer number (4335454928).

Almost surely, 2^55203243212 is an apocalyptic number.

55203243212 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55203243212 is a deficient number, since it is larger than the sum of its proper divisors (48847675060).

55203243212 is a wasteful number, since it uses less digits than its factorization.

55203243212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143249 (or 143247 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 55203243212 its reverse (21234230255), we get a palindrome (76437473467).

The spelling of 55203243212 in words is "fifty-five billion, two hundred three million, two hundred forty-three thousand, two hundred twelve".