5209754765 has 4 divisors (see below), whose sum is σ = 6251705724. Its totient is φ = 4167803808.

The previous prime is 5209754747. The next prime is 5209754789. The reversal of 5209754765 is 5674579025.

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 583850569 + 4625904196 = 24163^2 + 68014^2 .

It is a cyclic number.

It is not a de Polignac number, because 5209754765 - 2⁶ = 5209754701 is a prime.

It is a super-2 number, since 2×5209754765² = 54283089422880410450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520975472 + ... + 520975481.

It is an arithmetic number, because the mean of its divisors is an integer number (1562926431).

Almost surely, 2^5209754765 is an apocalyptic number.

It is an amenable number.

5209754765 is a deficient number, since it is larger than the sum of its proper divisors (1041950959).

5209754765 is a wasteful number, since it uses less digits than its factorization.

5209754765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041950958.

The product of its (nonzero) digits is 2646000, while the sum is 50.

The square root of 5209754765 is about 72178.6309443453. The cubic root of 5209754765 is about 1733.5608620409.

The spelling of 5209754765 in words is "five billion, two hundred nine million, seven hundred fifty-four thousand, seven hundred sixty-five".