85445513 has 8 divisors (see below), whose sum is σ = 88507080. Its totient is φ = 82391680.

The previous prime is 85445509. The next prime is 85445533. The reversal of 85445513 is 31554458.

It can be written as a sum of positive squares in 4 ways, for example, as 7246864 + 78198649 = 2692^2 + 8843^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85445513 - 2² = 85445509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85445533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29381 + ... + 32157.

It is an arithmetic number, because the mean of its divisors is an integer number (11063385).

Almost surely, 2^85445513 is an apocalyptic number.

It is an amenable number.

85445513 is a deficient number, since it is larger than the sum of its proper divisors (3061567).

85445513 is a wasteful number, since it uses less digits than its factorization.

85445513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867.

The product of its digits is 48000, while the sum is 35.

The square root of 85445513 is about 9243.6742153756. The cubic root of 85445513 is about 440.4498034477.

It can be divided in two parts, 85445 and 513, that added together give a palindrome (85958).

The spelling of 85445513 in words is "eighty-five million, four hundred forty-five thousand, five hundred thirteen".