55505140223 has 8 divisors (see below), whose sum is σ = 59782090368. Its totient is φ = 51229236384.

The previous prime is 55505140219. The next prime is 55505140283. The reversal of 55505140223 is 32204150555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55505140223 - 2² = 55505140219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55505140223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505140283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149615 + ... + 365232.

It is an arithmetic number, because the mean of its divisors is an integer number (7472761296).

Almost surely, 2^55505140223 is an apocalyptic number.

55505140223 is a deficient number, since it is larger than the sum of its proper divisors (4276950145).

55505140223 is a wasteful number, since it uses less digits than its factorization.

55505140223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523153.

The product of its (nonzero) digits is 30000, while the sum is 32.

Adding to 55505140223 its reverse (32204150555), we get a palindrome (87709290778).

The spelling of 55505140223 in words is "fifty-five billion, five hundred five million, one hundred forty thousand, two hundred twenty-three".