2230521 has 4 divisors (see below), whose sum is σ = 2974032. Its totient is φ = 1487012.

The previous prime is 2230513. The next prime is 2230531. The reversal of 2230521 is 1250322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2230521 - 2³ = 2230513 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 2¹⁷ + 3⁵ + 0 + 5 + 2²¹ + 1 .

It is a D-number.

2230521 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2230521.

It is not an unprimeable number, because it can be changed into a prime (2230511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371751 + ... + 371756.

It is an arithmetic number, because the mean of its divisors is an integer number (743508).

2^2230521 is an apocalyptic number.

It is an amenable number.

2230521 is a deficient number, since it is larger than the sum of its proper divisors (743511).

2230521 is an equidigital number, since it uses as much as digits as its factorization.

2230521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743510.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2230521 is about 1493.4928858217. The cubic root of 2230521 is about 130.6578293285.

Adding to 2230521 its reverse (1250322), we get a palindrome (3480843).

The spelling of 2230521 in words is "two million, two hundred thirty thousand, five hundred twenty-one".