85202401 has 4 divisors (see below), whose sum is σ = 85405204. Its totient is φ = 84999600.

The previous prime is 85202371. The next prime is 85202443. The reversal of 85202401 is 10420258.

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 33074001 + 52128400 = 5751^2 + 7220^2 .

It is a cyclic number.

It is not a de Polignac number, because 85202401 - 2¹³ = 85194209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85202101) 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, 100770 + ... + 101611.

It is an arithmetic number, because the mean of its divisors is an integer number (21351301).

Almost surely, 2^85202401 is an apocalyptic number.

It is an amenable number.

85202401 is a deficient number, since it is larger than the sum of its proper divisors (202803).

85202401 is a wasteful number, since it uses less digits than its factorization.

85202401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202802.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 85202401 is about 9230.5146660411. The cubic root of 85202401 is about 440.0316798815.

Adding to 85202401 its reverse (10420258), we get a palindrome (95622659).

The spelling of 85202401 in words is "eighty-five million, two hundred two thousand, four hundred one".