103500091 has 2 divisors, whose sum is σ = 103500092. Its totient is φ = 103500090.

The previous prime is 103500073. The next prime is 103500119. The reversal of 103500091 is 190005301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103500091 - 2¹⁵ = 103467323 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103500071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51750045 + 51750046.

It is an arithmetic number, because the mean of its divisors is an integer number (51750046).

Almost surely, 2^103500091 is an apocalyptic number.

103500091 is a deficient number, since it is larger than the sum of its proper divisors (1).

103500091 is an equidigital number, since it uses as much as digits as its factorization.

103500091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 103500091 is about 10173.4994470929. The cubic root of 103500091 is about 469.5122312527.

Adding to 103500091 its reverse (190005301), we get a palindrome (293505392).

The spelling of 103500091 in words is "one hundred three million, five hundred thousand, ninety-one".