2213551 has 2 divisors, whose sum is σ = 2213552. Its totient is φ = 2213550.

The previous prime is 2213537. The next prime is 2213591. The reversal of 2213551 is 1553122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2213551 - 2⁷ = 2213423 is a 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, 1106775 + 1106776.

It is an arithmetic number, because the mean of its divisors is an integer number (1106776).

2^2213551 is an apocalyptic number.

2213551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2213551 is an equidigital number, since it uses as much as digits as its factorization.

2213551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 300, while the sum is 19.

The square root of 2213551 is about 1487.8007259038. The cubic root of 2213551 is about 130.3256333532.

Adding to 2213551 its reverse (1553122), we get a palindrome (3766673).

The spelling of 2213551 in words is "two million, two hundred thirteen thousand, five hundred fifty-one".