2513221 has 8 divisors (see below), whose sum is σ = 2593184. Its totient is φ = 2434320.

The previous prime is 2513209. The next prime is 2513249. The reversal of 2513221 is 1223152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2513221 - 2⁹ = 2512709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2513195 and 2513204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2513281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8935 + ... + 9211.

It is an arithmetic number, because the mean of its divisors is an integer number (324148).

2^2513221 is an apocalyptic number.

It is an amenable number.

2513221 is a deficient number, since it is larger than the sum of its proper divisors (79963).

2513221 is a wasteful number, since it uses less digits than its factorization.

2513221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531.

The product of its digits is 120, while the sum is 16.

The square root of 2513221 is about 1585.3141644482. The cubic root of 2513221 is about 135.9597090855.

Adding to 2513221 its reverse (1223152), we get a palindrome (3736373).

The spelling of 2513221 in words is "two million, five hundred thirteen thousand, two hundred twenty-one".