2605523 has 2 divisors, whose sum is σ = 2605524. Its totient is φ = 2605522.

The previous prime is 2605501. The next prime is 2605529. The reversal of 2605523 is 3255062.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2605523 - 2¹⁰ = 2604499 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 6⁸ + 0 + 5⁴ + 5⁴ + 2¹⁸ + 3¹² .

It is not a weakly prime, because it can be changed into another prime (2605529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302761 + 1302762.

It is an arithmetic number, because the mean of its divisors is an integer number (1302762).

2^2605523 is an apocalyptic number.

2605523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2605523 is an equidigital number, since it uses as much as digits as its factorization.

2605523 is an evil number, because the sum of its binary digits is even.

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

The square root of 2605523 is about 1614.1632507278. The cubic root of 2605523 is about 137.6041832997.

The spelling of 2605523 in words is "two million, six hundred five thousand, five hundred twenty-three".