85072103 has 4 divisors (see below), whose sum is σ = 87050568. Its totient is φ = 83093640.

The previous prime is 85072081. The next prime is 85072121. The reversal of 85072103 is 30127058.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85072103 - 2¹⁶ = 85006567 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85072703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989168 + ... + 989253.

It is an arithmetic number, because the mean of its divisors is an integer number (21762642).

Almost surely, 2^85072103 is an apocalyptic number.

85072103 is a deficient number, since it is larger than the sum of its proper divisors (1978465).

85072103 is a wasteful number, since it uses less digits than its factorization.

85072103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978464.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 85072103 is about 9223.4539625891. The cubic root of 85072103 is about 439.8072554555.

The spelling of 85072103 in words is "eighty-five million, seventy-two thousand, one hundred three".