85243456 has 14 divisors (see below), whose sum is σ = 169155110. Its totient is φ = 42621696.

The previous prime is 85243453. The next prime is 85243463. The reversal of 85243456 is 65434258.

It can be written as a sum of positive squares in only one way, i.e., 58369600 + 26873856 = 7640^2 + 5184^2 .

It is not an unprimeable number, because it can be changed into a prime (85243453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665901 + ... + 666028.

Almost surely, 2^85243456 is an apocalyptic number.

It is an amenable number.

85243456 is a deficient number, since it is larger than the sum of its proper divisors (83911654).

85243456 is a wasteful number, since it uses less digits than its factorization.

85243456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331941 (or 1331931 counting only the distinct ones).

The product of its digits is 115200, while the sum is 37.

The square root of 85243456 is about 9232.7382720404. The cubic root of 85243456 is about 440.1023453383.

The spelling of 85243456 in words is "eighty-five million, two hundred forty-three thousand, four hundred fifty-six".