2045215 has 4 divisors (see below), whose sum is σ = 2454264. Its totient is φ = 1636168.

The previous prime is 2045213. The next prime is 2045311. The reversal of 2045215 is 5125402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2045215 - 2¹ = 2045213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2045192 and 2045201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045213) 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, 204517 + ... + 204526.

It is an arithmetic number, because the mean of its divisors is an integer number (613566).

2^2045215 is an apocalyptic number.

2045215 is a deficient number, since it is larger than the sum of its proper divisors (409049).

2045215 is an equidigital number, since it uses as much as digits as its factorization.

2045215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409048.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 2045215 is about 1430.1101356189. The cubic root of 2045215 is about 126.9344940873.

The spelling of 2045215 in words is "two million, forty-five thousand, two hundred fifteen".