135523166 has 4 divisors (see below), whose sum is σ = 203284752. Its totient is φ = 67761582.

The previous prime is 135523139. The next prime is 135523169. The reversal of 135523166 is 661325531.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135523169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33880790 + ... + 33880793.

It is an arithmetic number, because the mean of its divisors is an integer number (50821188).

Almost surely, 2^135523166 is an apocalyptic number.

135523166 is a deficient number, since it is larger than the sum of its proper divisors (67761586).

135523166 is an equidigital number, since it uses as much as digits as its factorization.

135523166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67761585.

The product of its digits is 16200, while the sum is 32.

The square root of 135523166 is about 11641.4417491993. The cubic root of 135523166 is about 513.6545974404.

Adding to 135523166 its reverse (661325531), we get a palindrome (796848697).

The spelling of 135523166 in words is "one hundred thirty-five million, five hundred twenty-three thousand, one hundred sixty-six".