61389103 has 2 divisors, whose sum is σ = 61389104. Its totient is φ = 61389102.

The previous prime is 61389101. The next prime is 61389121. The reversal of 61389103 is 30198316.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61389103 - 2¹ = 61389101 is a prime.

Together with 61389101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61389101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30694551 + 30694552.

It is an arithmetic number, because the mean of its divisors is an integer number (30694552).

Almost surely, 2^61389103 is an apocalyptic number.

61389103 is a deficient number, since it is larger than the sum of its proper divisors (1).

61389103 is an equidigital number, since it uses as much as digits as its factorization.

61389103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 61389103 is about 7835.1198459245. The cubic root of 61389103 is about 394.4849410309.

The spelling of 61389103 in words is "sixty-one million, three hundred eighty-nine thousand, one hundred three".