55403042243523 has 32 divisors (see below), whose sum is σ = 81032142777600. Its totient is φ = 33462165626496.

The previous prime is 55403042243509. The next prime is 55403042243531. The reversal of 55403042243523 is 32534224030455.

It is not a de Polignac number, because 55403042243523 - 2²⁰ = 55403041194947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55403042243503) 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, 18024640 + ... + 20873277.

It is an arithmetic number, because the mean of its divisors is an integer number (2532254461800).

Almost surely, 2^{55403042243523} is an apocalyptic number.

55403042243523 is a deficient number, since it is larger than the sum of its proper divisors (25629100534077).

55403042243523 is a wasteful number, since it uses less digits than its factorization.

55403042243523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38898611.

The product of its (nonzero) digits is 1728000, while the sum is 42.

Adding to 55403042243523 its reverse (32534224030455), we get a palindrome (87937266273978).

The spelling of 55403042243523 in words is "fifty-five trillion, four hundred three billion, forty-two million, two hundred forty-three thousand, five hundred twenty-three".