85472417 has 4 divisors (see below), whose sum is σ = 85615236. Its totient is φ = 85329600.

The previous prime is 85472389. The next prime is 85472449. The reversal of 85472417 is 71427458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71427458 = 2 ⋅35713729.

It can be written as a sum of positive squares in 2 ways, for example, as 78836641 + 6635776 = 8879^2 + 2576^2 .

It is a cyclic number.

It is not a de Polignac number, because 85472417 - 2⁶ = 85472353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85472467) 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, 70508 + ... + 71709.

It is an arithmetic number, because the mean of its divisors is an integer number (21403809).

Almost surely, 2^85472417 is an apocalyptic number.

It is an amenable number.

85472417 is a deficient number, since it is larger than the sum of its proper divisors (142819).

85472417 is a wasteful number, since it uses less digits than its factorization.

85472417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142818.

The product of its digits is 62720, while the sum is 38.

The square root of 85472417 is about 9245.1293663204. The cubic root of 85472417 is about 440.4960263470.

The spelling of 85472417 in words is "eighty-five million, four hundred seventy-two thousand, four hundred seventeen".