63161513 has 4 divisors (see below), whose sum is σ = 63300180. Its totient is φ = 63022848.

The previous prime is 63161489. The next prime is 63161587. The reversal of 63161513 is 31516136.

63161513 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.

It can be written as a sum of positive squares in 2 ways, for example, as 38291344 + 24870169 = 6188^2 + 4987^2 .

It is a cyclic number.

It is not a de Polignac number, because 63161513 - 2¹² = 63157417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63161113) 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, 68648 + ... + 69561.

It is an arithmetic number, because the mean of its divisors is an integer number (15825045).

Almost surely, 2^63161513 is an apocalyptic number.

It is an amenable number.

63161513 is a deficient number, since it is larger than the sum of its proper divisors (138667).

63161513 is a wasteful number, since it uses less digits than its factorization.

63161513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138666.

The product of its digits is 1620, while the sum is 26.

The square root of 63161513 is about 7947.4217831948. The cubic root of 63161513 is about 398.2454673738.

Adding to 63161513 its reverse (31516136), we get a palindrome (94677649).

The spelling of 63161513 in words is "sixty-three million, one hundred sixty-one thousand, five hundred thirteen".