85203541 has 4 divisors (see below), whose sum is σ = 90215532. Its totient is φ = 80191552.

The previous prime is 85203529. The next prime is 85203551. The reversal of 85203541 is 14530258.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55935441 + 29268100 = 7479^2 + 5410^2 .

It is a cyclic number.

It is not a de Polignac number, because 85203541 - 2⁷ = 85203413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85203551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2505970 + ... + 2506003.

It is an arithmetic number, because the mean of its divisors is an integer number (22553883).

Almost surely, 2^85203541 is an apocalyptic number.

It is an amenable number.

85203541 is a deficient number, since it is larger than the sum of its proper divisors (5011991).

85203541 is a wasteful number, since it uses less digits than its factorization.

85203541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5011990.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 85203541 is about 9230.5764175375. The cubic root of 85203541 is about 440.0336424001.

Adding to 85203541 its reverse (14530258), we get a palindrome (99733799).

The spelling of 85203541 in words is "eighty-five million, two hundred three thousand, five hundred forty-one".