2216513 has 8 divisors (see below), whose sum is σ = 2432808. Its totient is φ = 2006784.

The previous prime is 2216479. The next prime is 2216519. The reversal of 2216513 is 3156122.

It can be written as a sum of positive squares in 4 ways, for example, as 595984 + 1620529 = 772^2 + 1273^2 .

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

It is not a de Polignac number, because 2216513 - 2¹⁶ = 2150977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2216519) 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, 920 + ... + 2297.

It is an arithmetic number, because the mean of its divisors is an integer number (304101).

2^2216513 is an apocalyptic number.

It is an amenable number.

2216513 is a deficient number, since it is larger than the sum of its proper divisors (216295).

2216513 is a wasteful number, since it uses less digits than its factorization.

2216513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283.

The product of its digits is 360, while the sum is 20.

The square root of 2216513 is about 1488.7958221328. The cubic root of 2216513 is about 130.3837379510.

The spelling of 2216513 in words is "two million, two hundred sixteen thousand, five hundred thirteen".