63442161 has 24 divisors (see below), whose sum is σ = 94569384. Its totient is φ = 40953600.

The previous prime is 63442153. The next prime is 63442193. The reversal of 63442161 is 16124436.

63442161 is a `hidden beast` number, since 63 + 442 + 161 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 16451136 + 46991025 = 4056^2 + 6855^2 .

It is not a de Polignac number, because 63442161 - 2³ = 63442153 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63442261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105261 + ... + 105861.

It is an arithmetic number, because the mean of its divisors is an integer number (3940391).

Almost surely, 2^63442161 is an apocalyptic number.

It is an amenable number.

63442161 is a deficient number, since it is larger than the sum of its proper divisors (31127223).

63442161 is a wasteful number, since it uses less digits than its factorization.

63442161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961 (or 958 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 63442161 is about 7965.0587568454. The cubic root of 63442161 is about 398.8344424042.

Adding to 63442161 its reverse (16124436), we get a palindrome (79566597).

The spelling of 63442161 in words is "sixty-three million, four hundred forty-two thousand, one hundred sixty-one".