135521576 has 8 divisors (see below), whose sum is σ = 254102970. Its totient is φ = 67760784.

The previous prime is 135521549. The next prime is 135521579. The reversal of 135521576 is 675125531.

It can be written as a sum of positive squares in only one way, i.e., 122633476 + 12888100 = 11074^2 + 3590^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (135521579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8470091 + ... + 8470106.

Almost surely, 2^135521576 is an apocalyptic number.

It is an amenable number.

135521576 is a deficient number, since it is larger than the sum of its proper divisors (118581394).

135521576 is a wasteful number, since it uses less digits than its factorization.

135521576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16940203 (or 16940199 counting only the distinct ones).

The product of its digits is 31500, while the sum is 35.

The square root of 135521576 is about 11641.3734584885. The cubic root of 135521576 is about 513.6525886473.

The spelling of 135521576 in words is "one hundred thirty-five million, five hundred twenty-one thousand, five hundred seventy-six".