55133015423 has 4 divisors (see below), whose sum is σ = 55133494728. Its totient is φ = 55132536120.

The previous prime is 55133015411. The next prime is 55133015449. The reversal of 55133015423 is 32451033155.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55133015423 - 2⁶ = 55133015359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55133015423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55133015453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47888 + ... + 335498.

It is an arithmetic number, because the mean of its divisors is an integer number (13783373682).

Almost surely, 2^55133015423 is an apocalyptic number.

55133015423 is a deficient number, since it is larger than the sum of its proper divisors (479305).

55133015423 is a wasteful number, since it uses less digits than its factorization.

55133015423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479304.

The product of its (nonzero) digits is 27000, while the sum is 32.

Adding to 55133015423 its reverse (32451033155), we get a palindrome (87584048578).

The spelling of 55133015423 in words is "fifty-five billion, one hundred thirty-three million, fifteen thousand, four hundred twenty-three".