245488609 has 2 divisors, whose sum is σ = 245488610. Its totient is φ = 245488608.

The previous prime is 245488577. The next prime is 245488613. The reversal of 245488609 is 906884542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245235600 + 253009 = 15660^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 245488609 - 2⁵ = 245488577 is a prime.

It is not a weakly prime, because it can be changed into another prime (245488669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122744304 + 122744305.

It is an arithmetic number, because the mean of its divisors is an integer number (122744305).

Almost surely, 2^245488609 is an apocalyptic number.

It is an amenable number.

245488609 is a deficient number, since it is larger than the sum of its proper divisors (1).

245488609 is an equidigital number, since it uses as much as digits as its factorization.

245488609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 245488609 is about 15668.0761103589. The cubic root of 245488609 is about 626.1481691206.

The spelling of 245488609 in words is "two hundred forty-five million, four hundred eighty-eight thousand, six hundred nine".