2155008455 has 4 divisors (see below), whose sum is σ = 2586010152. Its totient is φ = 1724006760.

The previous prime is 2155008419. The next prime is 2155008463. The reversal of 2155008455 is 5548005512.

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

It is not a de Polignac number, because 2155008455 - 2¹⁶ = 2154942919 is a prime.

It is a super-2 number, since 2×2155008455² = 9288122882242974050, which contains 22 as substring.

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, 215500841 + ... + 215500850.

It is an arithmetic number, because the mean of its divisors is an integer number (646502538).

Almost surely, 2^2155008455 is an apocalyptic number.

2155008455 is a deficient number, since it is larger than the sum of its proper divisors (431001697).

2155008455 is an equidigital number, since it uses as much as digits as its factorization.

2155008455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431001696.

The product of its (nonzero) digits is 40000, while the sum is 35.

The square root of 2155008455 is about 46422.0686204310. The cubic root of 2155008455 is about 1291.6643091921.

The spelling of 2155008455 in words is "two billion, one hundred fifty-five million, eight thousand, four hundred fifty-five".