55212350445231 has 32 divisors (see below), whose sum is σ = 84287800235520. Its totient is φ = 31491908908416.

The previous prime is 55212350445199. The next prime is 55212350445257. The reversal of 55212350445231 is 13254405321255.

It is not a de Polignac number, because 55212350445231 - 2⁵ = 55212350445199 is a prime.

It is a super-2 number, since 2×55212350445231² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55212350443231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 310548360 + ... + 310726098.

It is an arithmetic number, because the mean of its divisors is an integer number (2633993757360).

Almost surely, 2^{55212350445231} is an apocalyptic number.

55212350445231 is a deficient number, since it is larger than the sum of its proper divisors (29075449790289).

55212350445231 is a wasteful number, since it uses less digits than its factorization.

55212350445231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204863.

The product of its (nonzero) digits is 720000, while the sum is 42.

Adding to 55212350445231 its reverse (13254405321255), we get a palindrome (68466755766486).

The spelling of 55212350445231 in words is "fifty-five trillion, two hundred twelve billion, three hundred fifty million, four hundred forty-five thousand, two hundred thirty-one".