617121103 has 2 divisors, whose sum is σ = 617121104. Its totient is φ = 617121102.

The previous prime is 617121077. The next prime is 617121133. The reversal of 617121103 is 301121716.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-617121103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (617121133) 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, 308560551 + 308560552.

It is an arithmetic number, because the mean of its divisors is an integer number (308560552).

Almost surely, 2^617121103 is an apocalyptic number.

617121103 is a deficient number, since it is larger than the sum of its proper divisors (1).

617121103 is an equidigital number, since it uses as much as digits as its factorization.

617121103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 617121103 is about 24841.9222887441. The cubic root of 617121103 is about 851.3800432973.

Adding to 617121103 its reverse (301121716), we get a palindrome (918242819).

The spelling of 617121103 in words is "six hundred seventeen million, one hundred twenty-one thousand, one hundred three".