55857875855 has 4 divisors (see below), whose sum is σ = 67029451032. Its totient is φ = 44686300680.

The previous prime is 55857875837. The next prime is 55857875873.

It is a happy number.

55857875855 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (55857875837) and next prime (55857875873).

It is not a de Polignac number, because 55857875855 - 2¹² = 55857871759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5585787581 + ... + 5585787590.

It is an arithmetic number, because the mean of its divisors is an integer number (16757362758).

Almost surely, 2^55857875855 is an apocalyptic number.

55857875855 is a deficient number, since it is larger than the sum of its proper divisors (11171575177).

55857875855 is a wasteful number, since it uses less digits than its factorization.

55857875855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11171575176.

The product of its digits is 392000000, while the sum is 68.

The spelling of 55857875855 in words is "fifty-five billion, eight hundred fifty-seven million, eight hundred seventy-five thousand, eight hundred fifty-five".