85524473 has 2 divisors, whose sum is σ = 85524474. Its totient is φ = 85524472.

The previous prime is 85524431. The next prime is 85524493. The reversal of 85524473 is 37442558.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59799289 + 25725184 = 7733^2 + 5072^2 .

It is a cyclic number.

It is not a de Polignac number, because 85524473 - 2⁶ = 85524409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (85524493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42762236 + 42762237.

It is an arithmetic number, because the mean of its divisors is an integer number (42762237).

Almost surely, 2^85524473 is an apocalyptic number.

It is an amenable number.

85524473 is a deficient number, since it is larger than the sum of its proper divisors (1).

85524473 is an equidigital number, since it uses as much as digits as its factorization.

85524473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 38.

The square root of 85524473 is about 9247.9442580500. The cubic root of 85524473 is about 440.5854345575.

The spelling of 85524473 in words is "eighty-five million, five hundred twenty-four thousand, four hundred seventy-three".