85538465 has 4 divisors (see below), whose sum is σ = 102646164. Its totient is φ = 68430768.

The previous prime is 85538461. The next prime is 85538473. The reversal of 85538465 is 56483558.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56483558 = 2 ⋅28241779.

It can be written as a sum of positive squares in 2 ways, for example, as 61606801 + 23931664 = 7849^2 + 4892^2 .

It is a cyclic number.

It is not a de Polignac number, because 85538465 - 2² = 85538461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85538461) 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, 8553842 + ... + 8553851.

It is an arithmetic number, because the mean of its divisors is an integer number (25661541).

Almost surely, 2^85538465 is an apocalyptic number.

It is an amenable number.

85538465 is a deficient number, since it is larger than the sum of its proper divisors (17107699).

85538465 is a wasteful number, since it uses less digits than its factorization.

85538465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17107698.

The product of its digits is 576000, while the sum is 44.

The square root of 85538465 is about 9248.7007195606. The cubic root of 85538465 is about 440.6094601766.

The spelling of 85538465 in words is "eighty-five million, five hundred thirty-eight thousand, four hundred sixty-five".