5209266049 has 4 divisors (see below), whose sum is σ = 5609978836. Its totient is φ = 4808553264.

The previous prime is 5209265989. The next prime is 5209266053. The reversal of 5209266049 is 9406629025.

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 1017610000 + 4191656049 = 31900^2 + 64743^2 .

It is a cyclic number.

It is not a de Polignac number, because 5209266049 - 2⁷ = 5209265921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5209265996 and 5209266014.

It is not an unprimeable number, because it can be changed into a prime (5209266059) 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, 200356374 + ... + 200356399.

It is an arithmetic number, because the mean of its divisors is an integer number (1402494709).

Almost surely, 2^5209266049 is an apocalyptic number.

It is an amenable number.

5209266049 is a deficient number, since it is larger than the sum of its proper divisors (400712787).

5209266049 is a wasteful number, since it uses less digits than its factorization.

5209266049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400712786.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 5209266049 is about 72175.2454031159. The cubic root of 5209266049 is about 1733.5066531282.

The spelling of 5209266049 in words is "five billion, two hundred nine million, two hundred sixty-six thousand, forty-nine".