85430503 has 4 divisors (see below), whose sum is σ = 85450968. Its totient is φ = 85410040.

The previous prime is 85430483. The next prime is 85430539. The reversal of 85430503 is 30503458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30503458 = 2 ⋅15251729.

It is a cyclic number.

It is not a de Polignac number, because 85430503 - 2²¹ = 83333351 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 (85430573) 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, 1468 + ... + 13153.

It is an arithmetic number, because the mean of its divisors is an integer number (21362742).

Almost surely, 2^85430503 is an apocalyptic number.

85430503 is a deficient number, since it is larger than the sum of its proper divisors (20465).

85430503 is a wasteful number, since it uses less digits than its factorization.

85430503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20464.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 85430503 is about 9242.8622731273. The cubic root of 85430503 is about 440.4240110315.

The spelling of 85430503 in words is "eighty-five million, four hundred thirty thousand, five hundred three".