81595103 has 2 divisors, whose sum is σ = 81595104. Its totient is φ = 81595102.

The previous prime is 81595061. The next prime is 81595127. The reversal of 81595103 is 30159518.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81595103 - 2⁶ = 81595039 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 81595103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (81595133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40797551 + 40797552.

It is an arithmetic number, because the mean of its divisors is an integer number (40797552).

Almost surely, 2^81595103 is an apocalyptic number.

81595103 is a deficient number, since it is larger than the sum of its proper divisors (1).

81595103 is an equidigital number, since it uses as much as digits as its factorization.

81595103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 81595103 is about 9033.0007749363. Note that the first 3 decimals coincide. The cubic root of 81595103 is about 433.7319002931.

The spelling of 81595103 in words is "eighty-one million, five hundred ninety-five thousand, one hundred three".