55431015512223 has 32 divisors (see below), whose sum is σ = 81570208591872. Its totient is φ = 33264855187200.

The previous prime is 55431015512161. The next prime is 55431015512227. The reversal of 55431015512223 is 32221551013455.

It is not a de Polignac number, because 55431015512223 - 2¹⁶ = 55431015446687 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55431015512227) 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, 3922023 + ... + 11235848.

It is an arithmetic number, because the mean of its divisors is an integer number (2549069018496).

Almost surely, 2^{55431015512223} is an apocalyptic number.

55431015512223 is a deficient number, since it is larger than the sum of its proper divisors (26139193079649).

55431015512223 is a wasteful number, since it uses less digits than its factorization.

55431015512223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15160215.

The product of its (nonzero) digits is 180000, while the sum is 39.

Adding to 55431015512223 its reverse (32221551013455), we get a palindrome (87652566525678).

The spelling of 55431015512223 in words is "fifty-five trillion, four hundred thirty-one billion, fifteen million, five hundred twelve thousand, two hundred twenty-three".