655503503 has 2 divisors, whose sum is σ = 655503504. Its totient is φ = 655503502.

The previous prime is 655503491. The next prime is 655503509. The reversal of 655503503 is 305305556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655503503 - 2¹⁶ = 655437967 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 655503503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655503509) 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, 327751751 + 327751752.

It is an arithmetic number, because the mean of its divisors is an integer number (327751752).

Almost surely, 2^655503503 is an apocalyptic number.

655503503 is a deficient number, since it is larger than the sum of its proper divisors (1).

655503503 is an equidigital number, since it uses as much as digits as its factorization.

655503503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33750, while the sum is 32.

The square root of 655503503 is about 25602.8026395549. The cubic root of 655503503 is about 868.6770322719.

The spelling of 655503503 in words is "six hundred fifty-five million, five hundred three thousand, five hundred three".