2211530 has 16 divisors (see below), whose sum is σ = 4215240. Its totient is φ = 832512.

The previous prime is 2211493. The next prime is 2211541. The reversal of 2211530 is 351122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1745041 + 466489 = 1321^2 + 683^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6335 + ... + 6674.

2^2211530 is an apocalyptic number.

2211530 is a deficient number, since it is larger than the sum of its proper divisors (2003710).

2211530 is a wasteful number, since it uses less digits than its factorization.

2211530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13033.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 2211530 is about 1487.1213803856. The cubic root of 2211530 is about 130.2859582935.

Adding to 2211530 its reverse (351122), we get a palindrome (2562652).

The spelling of 2211530 in words is "two million, two hundred eleven thousand, five hundred thirty".