85754522506 has 4 divisors (see below), whose sum is σ = 128631783762. Its totient is φ = 42877261252.

The previous prime is 85754522501. The next prime is 85754522521. The reversal of 85754522506 is 60522545758.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 45407774281 + 40346748225 = 213091^2 + 200865^2 .

It is a super-3 number, since 3×85754522506³ (a number of 34 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 85754522506.

It is not an unprimeable number, because it can be changed into a prime (85754522501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21438630625 + ... + 21438630628.

Almost surely, 2^85754522506 is an apocalyptic number.

85754522506 is a deficient number, since it is larger than the sum of its proper divisors (42877261256).

85754522506 is a wasteful number, since it uses less digits than its factorization.

85754522506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42877261255.

The product of its (nonzero) digits is 3360000, while the sum is 49.

The spelling of 85754522506 in words is "eighty-five billion, seven hundred fifty-four million, five hundred twenty-two thousand, five hundred six".