2257609 has 2 divisors, whose sum is σ = 2257610. Its totient is φ = 2257608.

The previous prime is 2257597. The next prime is 2257639. The reversal of 2257609 is 9067522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1863225 + 394384 = 1365^2 + 628^2 .

It is a cyclic number.

It is not a de Polignac number, because 2257609 - 2⁹ = 2257097 is a prime.

It is not a weakly prime, because it can be changed into another prime (2257639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128804 + 1128805.

It is an arithmetic number, because the mean of its divisors is an integer number (1128805).

2^2257609 is an apocalyptic number.

It is an amenable number.

2257609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2257609 is an equidigital number, since it uses as much as digits as its factorization.

2257609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 2257609 is about 1502.5341926226. The cubic root of 2257609 is about 131.1846162621.

The spelling of 2257609 in words is "two million, two hundred fifty-seven thousand, six hundred nine".