2523709 has 2 divisors, whose sum is σ = 2523710. Its totient is φ = 2523708.

The previous prime is 2523707. The next prime is 2523727. The reversal of 2523709 is 9073252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2295225 + 228484 = 1515^2 + 478^2 .

It is a cyclic number.

It is not a de Polignac number, because 2523709 - 2¹ = 2523707 is a prime.

Together with 2523707, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2523707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1261854 + 1261855.

It is an arithmetic number, because the mean of its divisors is an integer number (1261855).

2^2523709 is an apocalyptic number.

It is an amenable number.

2523709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2523709 is an equidigital number, since it uses as much as digits as its factorization.

2523709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 2523709 is about 1588.6185822909. The cubic root of 2523709 is about 136.1485724952.

The spelling of 2523709 in words is "two million, five hundred twenty-three thousand, seven hundred nine".