85533397 has 4 divisors (see below), whose sum is σ = 85808736. Its totient is φ = 85258060.

The previous prime is 85533391. The next prime is 85533401. The reversal of 85533397 is 79333558.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85533397 - 2¹¹ = 85531349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85533391) 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, 137203 + ... + 137824.

It is an arithmetic number, because the mean of its divisors is an integer number (21452184).

Almost surely, 2^85533397 is an apocalyptic number.

It is an amenable number.

85533397 is a deficient number, since it is larger than the sum of its proper divisors (275339).

85533397 is a wasteful number, since it uses less digits than its factorization.

85533397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275338.

The product of its digits is 340200, while the sum is 43.

The square root of 85533397 is about 9248.4267310716. The cubic root of 85533397 is about 440.6007582324.

The spelling of 85533397 in words is "eighty-five million, five hundred thirty-three thousand, three hundred ninety-seven".