53867513 has 6 divisors (see below), whose sum is σ = 62662266. Its totient is φ = 46172112.

The previous prime is 53867501. The next prime is 53867521. The reversal of 53867513 is 31576835.

It can be written as a sum of positive squares in only one way, i.e., 50580544 + 3286969 = 7112^2 + 1813^2 .

It is not a de Polignac number, because 53867513 - 2⁴ = 53867497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53867113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 549620 + ... + 549717.

It is an arithmetic number, because the mean of its divisors is an integer number (10443711).

Almost surely, 2^53867513 is an apocalyptic number.

It is an amenable number.

53867513 is a deficient number, since it is larger than the sum of its proper divisors (8794753).

53867513 is a wasteful number, since it uses less digits than its factorization.

53867513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099351 (or 1099344 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 53867513 is about 7339.4490937672. The cubic root of 53867513 is about 377.6669448578. Note that the first 3 decimals are identical.

The spelling of 53867513 in words is "fifty-three million, eight hundred sixty-seven thousand, five hundred thirteen".