85451589 has 12 divisors (see below), whose sum is σ = 123573996. Its totient is φ = 56901312.

The previous prime is 85451573. The next prime is 85451627. The reversal of 85451589 is 98515458.

It is a happy number.

85451589 is a `hidden beast` number, since 8 + 54 + 515 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 33005025 + 52446564 = 5745^2 + 7242^2 .

It is not a de Polignac number, because 85451589 - 2⁴ = 85451573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85451539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3367 + ... + 13499.

It is an arithmetic number, because the mean of its divisors is an integer number (10297833).

Almost surely, 2^85451589 is an apocalyptic number.

It is an amenable number.

85451589 is a deficient number, since it is larger than the sum of its proper divisors (38122407).

85451589 is a wasteful number, since it uses less digits than its factorization.

85451589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11076 (or 11073 counting only the distinct ones).

The product of its digits is 288000, while the sum is 45.

The square root of 85451589 is about 9244.0028667239. The cubic root of 85451589 is about 440.4602432765.

The spelling of 85451589 in words is "eighty-five million, four hundred fifty-one thousand, five hundred eighty-nine".