104156161 has 8 divisors (see below), whose sum is σ = 110508840. Its totient is φ = 97828608.

The previous prime is 104156099. The next prime is 104156177. The reversal of 104156161 is 161651401.

It can be written as a sum of positive squares in 4 ways, for example, as 13068225 + 91087936 = 3615^2 + 9544^2 .

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

It is not a de Polignac number, because 104156161 - 2⁷ = 104156033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (104156761) 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, 2635 + ... + 14671.

It is an arithmetic number, because the mean of its divisors is an integer number (13813605).

Almost surely, 2^104156161 is an apocalyptic number.

It is an amenable number.

104156161 is a deficient number, since it is larger than the sum of its proper divisors (6352679).

104156161 is a wasteful number, since it uses less digits than its factorization.

104156161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12563.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 104156161 is about 10205.6925781644. The cubic root of 104156161 is about 470.5021959714.

The spelling of 104156161 in words is "one hundred four million, one hundred fifty-six thousand, one hundred sixty-one".