85824506 has 4 divisors (see below), whose sum is σ = 128736762. Its totient is φ = 42912252.

The previous prime is 85824503. The next prime is 85824511. The reversal of 85824506 is 60542858.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60542858 = 2 ⋅30271429.

It can be written as a sum of positive squares in only one way, i.e., 50908225 + 34916281 = 7135^2 + 5909^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 85824506.

It is not an unprimeable number, because it can be changed into a prime (85824503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21456125 + ... + 21456128.

Almost surely, 2^85824506 is an apocalyptic number.

85824506 is a deficient number, since it is larger than the sum of its proper divisors (42912256).

85824506 is a wasteful number, since it uses less digits than its factorization.

85824506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42912255.

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 85824506 is about 9264.1516611075. The cubic root of 85824506 is about 441.1000470595.

The spelling of 85824506 in words is "eighty-five million, eight hundred twenty-four thousand, five hundred six".