655090049 has 2 divisors, whose sum is σ = 655090050. Its totient is φ = 655090048.

The previous prime is 655090043. The next prime is 655090061. The reversal of 655090049 is 940090556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 365001025 + 290089024 = 19105^2 + 17032^2 .

It is a cyclic number.

It is not a de Polignac number, because 655090049 - 2²⁴ = 638312833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 655089994 and 655090021.

It is not a weakly prime, because it can be changed into another prime (655090043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327545024 + 327545025.

It is an arithmetic number, because the mean of its divisors is an integer number (327545025).

Almost surely, 2^655090049 is an apocalyptic number.

It is an amenable number.

655090049 is a deficient number, since it is larger than the sum of its proper divisors (1).

655090049 is an equidigital number, since it uses as much as digits as its factorization.

655090049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 655090049 is about 25594.7269764692. The cubic root of 655090049 is about 868.4943566489.

The spelling of 655090049 in words is "six hundred fifty-five million, ninety thousand, forty-nine".