104981161 has 4 divisors (see below), whose sum is σ = 106548112. Its totient is φ = 103414212.

The previous prime is 104981153. The next prime is 104981203. The reversal of 104981161 is 161189401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161189401 = 107 ⋅1506443.

It is a cyclic number.

It is not a de Polignac number, because 104981161 - 2³ = 104981153 is a prime.

It is a super-2 number, since 2×104981161² = 22042088329815842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104981761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783375 + ... + 783508.

It is an arithmetic number, because the mean of its divisors is an integer number (26637028).

Almost surely, 2^104981161 is an apocalyptic number.

It is an amenable number.

104981161 is a deficient number, since it is larger than the sum of its proper divisors (1566951).

104981161 is an equidigital number, since it uses as much as digits as its factorization.

104981161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566950.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 104981161 is about 10246.0314756495. The cubic root of 104981161 is about 471.7411815387.

The spelling of 104981161 in words is "one hundred four million, nine hundred eighty-one thousand, one hundred sixty-one".