168522041 has 8 divisors (see below), whose sum is σ = 169864968. Its totient is φ = 167184000.

The previous prime is 168522023. The next prime is 168522043. The reversal of 168522041 is 140225861.

It can be written as a sum of positive squares in 4 ways, for example, as 2627641 + 165894400 = 1621^2 + 12880^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168522041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168521995 and 168522013.

It is not an unprimeable number, because it can be changed into a prime (168522043) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 97061 + ... + 98781.

It is an arithmetic number, because the mean of its divisors is an integer number (21233121).

Almost surely, 2^168522041 is an apocalyptic number.

It is an amenable number.

168522041 is a deficient number, since it is larger than the sum of its proper divisors (1342927).

168522041 is a wasteful number, since it uses less digits than its factorization.

168522041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 168522041 is about 12981.6039455839. The cubic root of 168522041 is about 552.3557806251.

The spelling of 168522041 in words is "one hundred sixty-eight million, five hundred twenty-two thousand, forty-one".