85605502 has 4 divisors (see below), whose sum is σ = 128408256. Its totient is φ = 42802750.

The previous prime is 85605491. The next prime is 85605503. The reversal of 85605502 is 20550658.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20550658 = 2 ⋅10275329.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85605503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21401374 + ... + 21401377.

It is an arithmetic number, because the mean of its divisors is an integer number (32102064).

Almost surely, 2^85605502 is an apocalyptic number.

85605502 is a deficient number, since it is larger than the sum of its proper divisors (42802754).

85605502 is a wasteful number, since it uses less digits than its factorization.

85605502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42802753.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 85605502 is about 9252.3241404525. The cubic root of 85605502 is about 440.7245328658.

The spelling of 85605502 in words is "eighty-five million, six hundred five thousand, five hundred two".