63113513 has 4 divisors (see below), whose sum is σ = 64304388. Its totient is φ = 61922640.

The previous prime is 63113471. The next prime is 63113521. The reversal of 63113513 is 31531136.

It is a happy number.

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 55995289 + 7118224 = 7483^2 + 2668^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63113513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63113543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595358 + ... + 595463.

It is an arithmetic number, because the mean of its divisors is an integer number (16076097).

Almost surely, 2^63113513 is an apocalyptic number.

It is an amenable number.

63113513 is a deficient number, since it is larger than the sum of its proper divisors (1190875).

63113513 is a wasteful number, since it uses less digits than its factorization.

63113513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190874.

The product of its digits is 810, while the sum is 23.

The square root of 63113513 is about 7944.4013619655. The cubic root of 63113513 is about 398.1445587352.

Adding to 63113513 its reverse (31531136), we get a palindrome (94644649).

The spelling of 63113513 in words is "sixty-three million, one hundred thirteen thousand, five hundred thirteen".