103785091 has 2 divisors, whose sum is σ = 103785092. Its totient is φ = 103785090.

The previous prime is 103785089. The next prime is 103785103. The reversal of 103785091 is 190587301.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (190587301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103785091 - 2¹ = 103785089 is a prime.

It is a super-2 number, since 2×103785091² = 21542690227756562, which contains 22 as substring.

Together with 103785089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (103785491) 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, 51892545 + 51892546.

It is an arithmetic number, because the mean of its divisors is an integer number (51892546).

Almost surely, 2^103785091 is an apocalyptic number.

103785091 is a deficient number, since it is larger than the sum of its proper divisors (1).

103785091 is an equidigital number, since it uses as much as digits as its factorization.

103785091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 103785091 is about 10187.4967975455. The cubic root of 103785091 is about 469.9427891733.

The spelling of 103785091 in words is "one hundred three million, seven hundred eighty-five thousand, ninety-one".