55552133123 has 4 divisors (see below), whose sum is σ = 55557359448. Its totient is φ = 55546906800.

The previous prime is 55552133099. The next prime is 55552133141. The reversal of 55552133123 is 32133125555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55552133123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55552135123) 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, 2597186 + ... + 2618487.

It is an arithmetic number, because the mean of its divisors is an integer number (13889339862).

Almost surely, 2^55552133123 is an apocalyptic number.

55552133123 is a deficient number, since it is larger than the sum of its proper divisors (5226325).

55552133123 is a wasteful number, since it uses less digits than its factorization.

55552133123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5226324.

The product of its digits is 67500, while the sum is 35.

Adding to 55552133123 its reverse (32133125555), we get a palindrome (87685258678).

The spelling of 55552133123 in words is "fifty-five billion, five hundred fifty-two million, one hundred thirty-three thousand, one hundred twenty-three".