2130555 has 32 divisors (see below), whose sum is σ = 3953664. Its totient is φ = 959616.

The previous prime is 2130539. The next prime is 2130577. The reversal of 2130555 is 5550312.

It is not a de Polignac number, because 2130555 - 2⁴ = 2130539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a d-powerful number, because it can be written as 2⁵ + 1 + 3¹¹ + 0 + 5³ + 5³ + 5⁹ .

2130555 is a lucky number.

It is a plaindrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10717 + ... + 10913.

It is an arithmetic number, because the mean of its divisors is an integer number (123552).

2^2130555 is an apocalyptic number.

2130555 is a deficient number, since it is larger than the sum of its proper divisors (1823109).

2130555 is a wasteful number, since it uses less digits than its factorization.

2130555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 2130555 is about 1459.6420794154. The cubic root of 2130555 is about 128.6760092667.

Adding to 2130555 its reverse (5550312), we get a palindrome (7680867).

The spelling of 2130555 in words is "two million, one hundred thirty thousand, five hundred fifty-five".