63321161 has 4 divisors (see below), whose sum is σ = 63447552. Its totient is φ = 63194772.

The previous prime is 63321157. The next prime is 63321163. The reversal of 63321161 is 16112336.

It is a happy number.

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 63321161 - 2² = 63321157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63321163) 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, 62441 + ... + 63446.

It is an arithmetic number, because the mean of its divisors is an integer number (15861888).

Almost surely, 2^63321161 is an apocalyptic number.

It is an amenable number.

63321161 is a deficient number, since it is larger than the sum of its proper divisors (126391).

63321161 is a wasteful number, since it uses less digits than its factorization.

63321161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126390.

The product of its digits is 648, while the sum is 23.

The square root of 63321161 is about 7957.4594563843. The cubic root of 63321161 is about 398.5807221655.

Adding to 63321161 its reverse (16112336), we get a palindrome (79433497).

The spelling of 63321161 in words is "sixty-three million, three hundred twenty-one thousand, one hundred sixty-one".