55278287255 has 8 divisors (see below), whose sum is σ = 66346979424. Its totient is φ = 44213940000.

The previous prime is 55278287243. The next prime is 55278287287.

It is a happy number.

55278287255 is nontrivially palindromic in base 10.

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

It is a de Polignac number, because none of the positive numbers 2^k-55278287255 is a prime.

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 55278287255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1058171 + ... + 1109180.

It is an arithmetic number, because the mean of its divisors is an integer number (8293372428).

Almost surely, 2^55278287255 is an apocalyptic number.

55278287255 is a deficient number, since it is larger than the sum of its proper divisors (11068692169).

55278287255 is a wasteful number, since it uses less digits than its factorization.

55278287255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172457.

The product of its digits is 15680000, while the sum is 56.

The spelling of 55278287255 in words is "fifty-five billion, two hundred seventy-eight million, two hundred eighty-seven thousand, two hundred fifty-five".