29561161 has 12 divisors (see below), whose sum is σ = 34488192. Its totient is φ = 25264008.

The previous prime is 29561159. The next prime is 29561173. The reversal of 29561161 is 16116592.

It is not a de Polignac number, because 29561161 - 2¹ = 29561159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29561111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22036 + ... + 23338.

It is an arithmetic number, because the mean of its divisors is an integer number (2874016).

Almost surely, 2^29561161 is an apocalyptic number.

It is an amenable number.

29561161 is a deficient number, since it is larger than the sum of its proper divisors (4927031).

29561161 is a wasteful number, since it uses less digits than its factorization.

29561161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780 (or 1773 counting only the distinct ones).

The product of its digits is 3240, while the sum is 31.

The square root of 29561161 is about 5437.0176567674. The cubic root of 29561161 is about 309.2007193219.

The spelling of 29561161 in words is "twenty-nine million, five hundred sixty-one thousand, one hundred sixty-one".