2218532 has 6 divisors (see below), whose sum is σ = 3882438. Its totient is φ = 1109264.

The previous prime is 2218523. The next prime is 2218547. The reversal of 2218532 is 2358122.

It can be written as a sum of positive squares in only one way, i.e., 2119936 + 98596 = 1456^2 + 314^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2218498 and 2218507.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277313 + ... + 277320.

It is an arithmetic number, because the mean of its divisors is an integer number (647073).

2^2218532 is an apocalyptic number.

It is an amenable number.

2218532 is a deficient number, since it is larger than the sum of its proper divisors (1663906).

2218532 is a wasteful number, since it uses less digits than its factorization.

2218532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554637 (or 554635 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 2218532 is about 1489.4737325646. The cubic root of 2218532 is about 130.4233143605.

It can be divided in two parts, 22 and 18532, that multiplied together give a palindrome (407704).

The spelling of 2218532 in words is "two million, two hundred eighteen thousand, five hundred thirty-two".