2523530 has 16 divisors (see below), whose sum is σ = 4560840. Its totient is φ = 1005312.

The previous prime is 2523529. The next prime is 2523533. The reversal of 2523530 is 353252.

It can be written as a sum of positive squares in 4 ways, for example, as 1885129 + 638401 = 1373^2 + 799^2 .

It is not an unprimeable number, because it can be changed into a prime (2523533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3782 + ... + 4398.

2^2523530 is an apocalyptic number.

2523530 is a deficient number, since it is larger than the sum of its proper divisors (2037310).

2523530 is a wasteful number, since it uses less digits than its factorization.

2523530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 2523530 is about 1588.5622430361. The cubic root of 2523530 is about 136.1453535332.

Adding to 2523530 its reverse (353252), we get a palindrome (2876782).

The spelling of 2523530 in words is "two million, five hundred twenty-three thousand, five hundred thirty".