63215161 has 4 divisors (see below), whose sum is σ = 63258192. Its totient is φ = 63172132.

The previous prime is 63215123. The next prime is 63215171. The reversal of 63215161 is 16151236.

63215161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 63215161 - 2¹¹ = 63213113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63215111) 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 3 ways as a sum of consecutive naturals, for example, 19231 + ... + 22276.

It is an arithmetic number, because the mean of its divisors is an integer number (15814548).

Almost surely, 2^63215161 is an apocalyptic number.

It is an amenable number.

63215161 is a deficient number, since it is larger than the sum of its proper divisors (43031).

63215161 is a wasteful number, since it uses less digits than its factorization.

63215161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43030.

The product of its digits is 1080, while the sum is 25.

The square root of 63215161 is about 7950.7962494331. The cubic root of 63215161 is about 398.3581891125.

Adding to 63215161 its reverse (16151236), we get a palindrome (79366397).

The spelling of 63215161 in words is "sixty-three million, two hundred fifteen thousand, one hundred sixty-one".