5212661065 has 4 divisors (see below), whose sum is σ = 6255193284. Its totient is φ = 4170128848.

The previous prime is 5212661021. The next prime is 5212661081. The reversal of 5212661065 is 5601662125.

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 593555769 + 4619105296 = 24363^2 + 67964^2 .

It is a cyclic number.

It is not a de Polignac number, because 5212661065 - 2⁹ = 5212660553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5212661065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521266102 + ... + 521266111.

It is an arithmetic number, because the mean of its divisors is an integer number (1563798321).

Almost surely, 2^5212661065 is an apocalyptic number.

It is an amenable number.

5212661065 is a deficient number, since it is larger than the sum of its proper divisors (1042532219).

5212661065 is a wasteful number, since it uses less digits than its factorization.

5212661065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042532218.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 5212661065 is about 72198.7608273161. The cubic root of 5212661065 is about 1733.8831620068.

The spelling of 5212661065 in words is "five billion, two hundred twelve million, six hundred sixty-one thousand, sixty-five".