2815245 has 24 divisors (see below), whose sum is σ = 4952376. Its totient is φ = 1479168.

The previous prime is 2815237. The next prime is 2815247. The reversal of 2815245 is 5425182.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 927369 + 1887876 = 963^2 + 1374^2 .

It is not a de Polignac number, because 2815245 - 2³ = 2815237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2815247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2857 + ... + 3713.

It is an arithmetic number, because the mean of its divisors is an integer number (206349).

2^2815245 is an apocalyptic number.

It is an amenable number.

2815245 is a deficient number, since it is larger than the sum of its proper divisors (2137131).

2815245 is a wasteful number, since it uses less digits than its factorization.

2815245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941 (or 938 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 2815245 is about 1677.8691844122. The cubic root of 2815245 is about 141.2013119583.

The spelling of 2815245 in words is "two million, eight hundred fifteen thousand, two hundred forty-five".