858103 has 2 divisors, whose sum is σ = 858104. Its totient is φ = 858102.

The previous prime is 858101. The next prime is 858113. The reversal of 858103 is 301858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 858103 - 2¹ = 858101 is a prime.

Together with 858101, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is equal to p₆₈₂₀₉ and since 858103 and 68209 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (858101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429051 + 429052.

It is an arithmetic number, because the mean of its divisors is an integer number (429052).

2⁸⁵⁸¹⁰³ is an apocalyptic number.

858103 is a deficient number, since it is larger than the sum of its proper divisors (1).

858103 is an equidigital number, since it uses as much as digits as its factorization.

858103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 858103 is about 926.3384910496. The cubic root of 858103 is about 95.0268806666.

It can be divided in two parts, 858 and 103, that added together give a square (961 = 31²).

The spelling of 858103 in words is "eight hundred fifty-eight thousand, one hundred three".