2172270555 has 256 divisors, whose sum is σ = 5025484800. Its totient is φ = 876759552.

The previous prime is 2172270539. The next prime is 2172270577. The reversal of 2172270555 is 5550722712.

2172270555 is a `hidden beast` number, since 2 + 17 + 22 + 70 + 555 = 666.

It is not a de Polignac number, because 2172270555 - 2⁴ = 2172270539 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 36818116 + ... + 36818174.

It is an arithmetic number, because the mean of its divisors is an integer number (19630800).

Almost surely, 2^2172270555 is an apocalyptic number.

2172270555 is an abundant number, since it is smaller than the sum of its proper divisors (2853214245).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2172270555 is an equidigital number, since it uses as much as digits as its factorization.

2172270555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 36.

The square root of 2172270555 is about 46607.6233571290. The cubic root of 2172270555 is about 1295.1039813546.

The spelling of 2172270555 in words is "two billion, one hundred seventy-two million, two hundred seventy thousand, five hundred fifty-five".