55213512054113 has 4 divisors (see below), whose sum is σ = 63101156633280. Its totient is φ = 47325867474948.

The previous prime is 55213512054109. The next prime is 55213512054247. The reversal of 55213512054113 is 31145021531255.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55213512054113 - 2² = 55213512054109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55213512054013) 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, 3943822289573 + ... + 3943822289586.

It is an arithmetic number, because the mean of its divisors is an integer number (15775289158320).

Almost surely, 2^{55213512054113} is an apocalyptic number.

It is an amenable number.

55213512054113 is a deficient number, since it is larger than the sum of its proper divisors (7887644579167).

55213512054113 is an equidigital number, since it uses as much as digits as its factorization.

55213512054113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7887644579166.

The product of its (nonzero) digits is 90000, while the sum is 38.

Adding to 55213512054113 its reverse (31145021531255), we get a palindrome (86358533585368).

The spelling of 55213512054113 in words is "fifty-five trillion, two hundred thirteen billion, five hundred twelve million, fifty-four thousand, one hundred thirteen".