5261008513 has 4 divisors (see below), whose sum is σ = 5570479620. Its totient is φ = 4951537408.

The previous prime is 5261008499. The next prime is 5261008537. The reversal of 5261008513 is 3158001625.

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 2886590529 + 2374417984 = 53727^2 + 48728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5261008513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5261008573) 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, 154735528 + ... + 154735561.

It is an arithmetic number, because the mean of its divisors is an integer number (1392619905).

Almost surely, 2^5261008513 is an apocalyptic number.

It is an amenable number.

5261008513 is a deficient number, since it is larger than the sum of its proper divisors (309471107).

5261008513 is a wasteful number, since it uses less digits than its factorization.

5261008513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309471106.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 5261008513 is about 72532.8099069656. The cubic root of 5261008513 is about 1739.2272643340.

The spelling of 5261008513 in words is "five billion, two hundred sixty-one million, eight thousand, five hundred thirteen".