55551170005 has 4 divisors (see below), whose sum is σ = 66661404012. Its totient is φ = 44440936000.

The previous prime is 55551169987. The next prime is 55551170009. The reversal of 55551170005 is 50007115555.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7605060849 + 47946109156 = 87207^2 + 218966^2 .

It is a de Polignac number, because none of the positive numbers 2^k-55551170005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55551170009) 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, 5555116996 + ... + 5555117005.

It is an arithmetic number, because the mean of its divisors is an integer number (16665351003).

Almost surely, 2^55551170005 is an apocalyptic number.

It is an amenable number.

55551170005 is a deficient number, since it is larger than the sum of its proper divisors (11110234007).

55551170005 is a wasteful number, since it uses less digits than its factorization.

55551170005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110234006.

The product of its (nonzero) digits is 21875, while the sum is 34.

The spelling of 55551170005 in words is "fifty-five billion, five hundred fifty-one million, one hundred seventy thousand, five".