2520015 has 16 divisors (see below), whose sum is σ = 4126848. Its totient is φ = 1312416.

The previous prime is 2519981. The next prime is 2520017. The reversal of 2520015 is 5100252.

It is not a de Polignac number, because 2520015 - 2¹³ = 2511823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 2519976 and 2520003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1309 + ... + 2598.

It is an arithmetic number, because the mean of its divisors is an integer number (257928).

2^2520015 is an apocalyptic number.

2520015 is a deficient number, since it is larger than the sum of its proper divisors (1606833).

2520015 is a wasteful number, since it uses less digits than its factorization.

2520015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3958.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 2520015 is about 1587.4555111876. The cubic root of 2520015 is about 136.0821123222.

Adding to 2520015 its reverse (5100252), we get a palindrome (7620267).

The spelling of 2520015 in words is "two million, five hundred twenty thousand, fifteen".