61163161 has 8 divisors (see below), whose sum is σ = 65728800. Its totient is φ = 56705088.

The previous prime is 61163153. The next prime is 61163213. The reversal of 61163161 is 16136116.

61163161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61163161 - 2³ = 61163153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61163111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25711 + ... + 27988.

It is an arithmetic number, because the mean of its divisors is an integer number (8216100).

Almost surely, 2^61163161 is an apocalyptic number.

It is an amenable number.

61163161 is a deficient number, since it is larger than the sum of its proper divisors (4565639).

61163161 is a wasteful number, since it uses less digits than its factorization.

61163161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53783.

The product of its digits is 648, while the sum is 25.

The square root of 61163161 is about 7820.6880132121. The cubic root of 61163161 is about 394.0003800661. Note that the first 3 decimals are identical.

Adding to 61163161 its reverse (16136116), we get a palindrome (77299277).

The spelling of 61163161 in words is "sixty-one million, one hundred sixty-three thousand, one hundred sixty-one".