168061541 has 8 divisors (see below), whose sum is σ = 179582040. Its totient is φ = 156722688.

The previous prime is 168061499. The next prime is 168061561. The reversal of 168061541 is 145160861.

It can be written as a sum of positive squares in 4 ways, for example, as 105493441 + 62568100 = 10271^2 + 7910^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 168061541 - 2⁶ = 168061477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 168061498 and 168061507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168061561) 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 in 7 ways as a sum of consecutive naturals, for example, 43496 + ... + 47201.

It is an arithmetic number, because the mean of its divisors is an integer number (22447755).

Almost surely, 2^168061541 is an apocalyptic number.

It is an amenable number.

168061541 is a deficient number, since it is larger than the sum of its proper divisors (11520499).

168061541 is a wasteful number, since it uses less digits than its factorization.

168061541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90823.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 168061541 is about 12963.8551750627. The cubic root of 168061541 is about 551.8522028259.

The spelling of 168061541 in words is "one hundred sixty-eight million, sixty-one thousand, five hundred forty-one".