85464521 has 4 divisors (see below), whose sum is σ = 87452112. Its totient is φ = 83476932.

The previous prime is 85464517. The next prime is 85464529. The reversal of 85464521 is 12546458.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12546458 = 2 ⋅6273229.

It is not a de Polignac number, because 85464521 - 2² = 85464517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85464529) 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, 993731 + ... + 993816.

It is an arithmetic number, because the mean of its divisors is an integer number (21863028).

Almost surely, 2^85464521 is an apocalyptic number.

It is an amenable number.

85464521 is a deficient number, since it is larger than the sum of its proper divisors (1987591).

85464521 is a wasteful number, since it uses less digits than its factorization.

85464521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987590.

The product of its digits is 38400, while the sum is 35.

The square root of 85464521 is about 9244.7023207889. The cubic root of 85464521 is about 440.4824614885.

The spelling of 85464521 in words is "eighty-five million, four hundred sixty-four thousand, five hundred twenty-one".