2145176455 has 4 divisors (see below), whose sum is σ = 2574211752. Its totient is φ = 1716141160.

The previous prime is 2145176441. The next prime is 2145176461. The reversal of 2145176455 is 5546715412.

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

It is not a de Polignac number, because 2145176455 - 2¹⁵ = 2145143687 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214517641 + ... + 214517650.

It is an arithmetic number, because the mean of its divisors is an integer number (643552938).

Almost surely, 2^2145176455 is an apocalyptic number.

2145176455 is a deficient number, since it is larger than the sum of its proper divisors (429035297).

2145176455 is an equidigital number, since it uses as much as digits as its factorization.

2145176455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429035296.

The product of its digits is 168000, while the sum is 40.

The square root of 2145176455 is about 46316.0496480432. The cubic root of 2145176455 is about 1289.6969532314.

The spelling of 2145176455 in words is "two billion, one hundred forty-five million, one hundred seventy-six thousand, four hundred fifty-five".