2153215 has 16 divisors (see below), whose sum is σ = 2703168. Its totient is φ = 1645056.

The previous prime is 2153209. The next prime is 2153227. The reversal of 2153215 is 5123512.

2153215 = 223² + 224² + ... + 259².

It is a cyclic number.

It is not a de Polignac number, because 2153215 - 2¹³ = 2145023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2153192 and 2153201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18999 + ... + 19111.

It is an arithmetic number, because the mean of its divisors is an integer number (168948).

2^2153215 is an apocalyptic number.

2153215 is a deficient number, since it is larger than the sum of its proper divisors (549953).

2153215 is a wasteful number, since it uses less digits than its factorization.

2153215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258.

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

The square root of 2153215 is about 1467.3837262284. The cubic root of 2153215 is about 129.1305890685.

Adding to 2153215 its reverse (5123512), we get a palindrome (7276727).

The spelling of 2153215 in words is "two million, one hundred fifty-three thousand, two hundred fifteen".