2180355 has 16 divisors (see below), whose sum is σ = 3517344. Its totient is φ = 1153280.

The previous prime is 2180351. The next prime is 2180357. The reversal of 2180355 is 5530812.

It is not a de Polignac number, because 2180355 - 2² = 2180351 is a prime.

2180355 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2180351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1525 + ... + 2585.

It is an arithmetic number, because the mean of its divisors is an integer number (219834).

2^2180355 is an apocalyptic number.

2180355 is a deficient number, since it is larger than the sum of its proper divisors (1336989).

2180355 is a wasteful number, since it uses less digits than its factorization.

2180355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2180355 is about 1476.6025192989. The cubic root of 2180355 is about 129.6708636423.

The spelling of 2180355 in words is "two million, one hundred eighty thousand, three hundred fifty-five".