655215103 has 2 divisors, whose sum is σ = 655215104. Its totient is φ = 655215102.

The previous prime is 655215089. The next prime is 655215131. The reversal of 655215103 is 301512556.

It is an a-pointer prime, because the next prime (655215131) can be obtained adding 655215103 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655215103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655213103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327607551 + 327607552.

It is an arithmetic number, because the mean of its divisors is an integer number (327607552).

Almost surely, 2^655215103 is an apocalyptic number.

655215103 is a deficient number, since it is larger than the sum of its proper divisors (1).

655215103 is an equidigital number, since it uses as much as digits as its factorization.

655215103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 655215103 is about 25597.1698240255. The cubic root of 655215103 is about 868.5496171347.

Adding to 655215103 its reverse (301512556), we get a palindrome (956727659).

The spelling of 655215103 in words is "six hundred fifty-five million, two hundred fifteen thousand, one hundred three".