168520552 has 16 divisors (see below), whose sum is σ = 321156900. Its totient is φ = 82878720.

The previous prime is 168520531. The next prime is 168520571. The reversal of 168520552 is 255025861.

It can be written as a sum of positive squares in 2 ways, for example, as 146748996 + 21771556 = 12114^2 + 4666^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172177 + ... + 173152.

Almost surely, 2^168520552 is an apocalyptic number.

It is an amenable number.

168520552 is a deficient number, since it is larger than the sum of its proper divisors (152636348).

168520552 is a wasteful number, since it uses less digits than its factorization.

168520552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345396 (or 345392 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 168520552 is about 12981.5465950710. The cubic root of 168520552 is about 552.3541538147.

The spelling of 168520552 in words is "one hundred sixty-eight million, five hundred twenty thousand, five hundred fifty-two".