2523506 has 8 divisors (see below), whose sum is σ = 3828060. Its totient is φ = 1247488.

The previous prime is 2523503. The next prime is 2523517. The reversal of 2523506 is 6053252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2430481 + 93025 = 1559^2 + 305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2523503) 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, 6911 + ... + 7266.

2^2523506 is an apocalyptic number.

2523506 is a deficient number, since it is larger than the sum of its proper divisors (1304554).

2523506 is a wasteful number, since it uses less digits than its factorization.

2523506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14268.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 2523506 is about 1588.5546890177. The cubic root of 2523506 is about 136.1449219289.

Adding to 2523506 its reverse (6053252), we get a palindrome (8576758).

The spelling of 2523506 in words is "two million, five hundred twenty-three thousand, five hundred six".