85411457 has 4 divisors (see below), whose sum is σ = 85569876. Its totient is φ = 85253040.

The previous prime is 85411439. The next prime is 85411481. The reversal of 85411457 is 75411458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75411458 = 2 ⋅37705729.

It can be written as a sum of positive squares in 2 ways, for example, as 35058241 + 50353216 = 5921^2 + 7096^2 .

It is a cyclic number.

It is not a de Polignac number, because 85411457 - 2⁶ = 85411393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85411427) 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, 78398 + ... + 79479.

It is an arithmetic number, because the mean of its divisors is an integer number (21392469).

Almost surely, 2^85411457 is an apocalyptic number.

It is an amenable number.

85411457 is a deficient number, since it is larger than the sum of its proper divisors (158419).

85411457 is a wasteful number, since it uses less digits than its factorization.

85411457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158418.

The product of its digits is 22400, while the sum is 35.

The square root of 85411457 is about 9241.8319071491. The cubic root of 85411457 is about 440.3912790101.

Subtracting from 85411457 its reverse (75411458), we obtain a palindrome (9999999).

The spelling of 85411457 in words is "eighty-five million, four hundred eleven thousand, four hundred fifty-seven".