2213537 has 2 divisors, whose sum is σ = 2213538. Its totient is φ = 2213536.

The previous prime is 2213531. The next prime is 2213551. The reversal of 2213537 is 7353122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2027776 + 185761 = 1424^2 + 431^2 .

It is a cyclic number.

It is not a de Polignac number, because 2213537 - 2⁶ = 2213473 is a prime.

It is a Chen prime.

It is equal to p₁₆₃₆₀₇ and since 2213537 and 163607 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2213531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106768 + 1106769.

It is an arithmetic number, because the mean of its divisors is an integer number (1106769).

2^2213537 is an apocalyptic number.

It is an amenable number.

2213537 is a deficient number, since it is larger than the sum of its proper divisors (1).

2213537 is an equidigital number, since it uses as much as digits as its factorization.

2213537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 23.

The square root of 2213537 is about 1487.7960209652. The cubic root of 2213537 is about 130.3253585967.

Adding to 2213537 its reverse (7353122), we get a palindrome (9566659).

The spelling of 2213537 in words is "two million, two hundred thirteen thousand, five hundred thirty-seven".