401136161 has 8 divisors (see below), whose sum is σ = 404352000. Its totient is φ = 397927600.

The previous prime is 401136143. The next prime is 401136163. The reversal of 401136161 is 161631104.

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-401136161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401136163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170330 + ... + 172668.

It is an arithmetic number, because the mean of its divisors is an integer number (50544000).

Almost surely, 2^401136161 is an apocalyptic number.

It is an amenable number.

401136161 is a deficient number, since it is larger than the sum of its proper divisors (3215839).

401136161 is a wasteful number, since it uses less digits than its factorization.

401136161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 401136161 is about 20028.3838838784. The cubic root of 401136161 is about 737.5032490903.

Adding to 401136161 its reverse (161631104), we get a palindrome (562767265).

The spelling of 401136161 in words is "four hundred one million, one hundred thirty-six thousand, one hundred sixty-one".