85354477 has 4 divisors (see below), whose sum is σ = 91920220. Its totient is φ = 78788736.

The previous prime is 85354459. The next prime is 85354481. The reversal of 85354477 is 77445358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77445358 = 2 ⋅38722679.

It can be written as a sum of positive squares in 2 ways, for example, as 3976036 + 81378441 = 1994^2 + 9021^2 .

It is not a de Polignac number, because 85354477 - 2¹¹ = 85352429 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 (85354487) 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, 3282852 + ... + 3282877.

It is an arithmetic number, because the mean of its divisors is an integer number (22980055).

Almost surely, 2^85354477 is an apocalyptic number.

It is an amenable number.

85354477 is a deficient number, since it is larger than the sum of its proper divisors (6565743).

85354477 is a wasteful number, since it uses less digits than its factorization.

85354477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6565742.

The product of its digits is 470400, while the sum is 43.

The square root of 85354477 is about 9238.7486706805. The cubic root of 85354477 is about 440.2933254171.

The spelling of 85354477 in words is "eighty-five million, three hundred fifty-four thousand, four hundred seventy-seven".