55144151213 has 4 divisors (see below), whose sum is σ = 55144688448. Its totient is φ = 55143613980.

The previous prime is 55144151207. The next prime is 55144151233. The reversal of 55144151213 is 31215144155.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55144151213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55144151213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55144151233) 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, 61331 + ... + 337712.

It is an arithmetic number, because the mean of its divisors is an integer number (13786172112).

Almost surely, 2^55144151213 is an apocalyptic number.

It is an amenable number.

55144151213 is a deficient number, since it is larger than the sum of its proper divisors (537235).

55144151213 is a wasteful number, since it uses less digits than its factorization.

55144151213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537234.

The product of its digits is 12000, while the sum is 32.

Adding to 55144151213 its reverse (31215144155), we get a palindrome (86359295368).

The spelling of 55144151213 in words is "fifty-five billion, one hundred forty-four million, one hundred fifty-one thousand, two hundred thirteen".