55255078303 has 4 divisors (see below), whose sum is σ = 56540080168. Its totient is φ = 53970076440.

The previous prime is 55255078289. The next prime is 55255078327. The reversal of 55255078303 is 30387055255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30387055255 = 5 ⋅6077411051.

It is a cyclic number.

It is not a de Polignac number, because 55255078303 - 2⁵ = 55255078271 is a prime.

It is a super-2 number, since 2×55255078303² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 1285001821 = 55255078303 / (5 + 5 + 2 + 5 + 5 + 0 + 7 + 8 + 3 + 0 + 3).

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 55255078303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55255018303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642500868 + ... + 642500953.

It is an arithmetic number, because the mean of its divisors is an integer number (14135020042).

Almost surely, 2^55255078303 is an apocalyptic number.

55255078303 is a deficient number, since it is larger than the sum of its proper divisors (1285001865).

55255078303 is a wasteful number, since it uses less digits than its factorization.

55255078303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285001864.

The product of its (nonzero) digits is 630000, while the sum is 43.

The spelling of 55255078303 in words is "fifty-five billion, two hundred fifty-five million, seventy-eight thousand, three hundred three".