2523215 has 16 divisors (see below), whose sum is σ = 3250368. Its totient is φ = 1875456.

The previous prime is 2523211. The next prime is 2523217. The reversal of 2523215 is 5123252.

It is not a de Polignac number, because 2523215 - 2² = 2523211 is a prime.

It is a super-2 number, since 2×2523215² = 12733227872450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2523211) 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, 3959 + ... + 4551.

It is an arithmetic number, because the mean of its divisors is an integer number (203148).

2^2523215 is an apocalyptic number.

2523215 is a deficient number, since it is larger than the sum of its proper divisors (727153).

2523215 is a wasteful number, since it uses less digits than its factorization.

2523215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658.

The product of its digits is 600, while the sum is 20.

The square root of 2523215 is about 1588.4630936852. The cubic root of 2523215 is about 136.1396885096.

Adding to 2523215 its reverse (5123252), we get a palindrome (7646467).

The spelling of 2523215 in words is "two million, five hundred twenty-three thousand, two hundred fifteen".