5651665505 has 4 divisors (see below), whose sum is σ = 6781998612. Its totient is φ = 4521332400.

The previous prime is 5651665499. The next prime is 5651665511. The reversal of 5651665505 is 5055661565.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (5651665499) and next prime (5651665511).

It can be written as a sum of positive squares in 2 ways, for example, as 888457249 + 4763208256 = 29807^2 + 69016^2 .

It is not a de Polignac number, because 5651665505 - 2¹⁰ = 5651664481 is a prime.

It is a Duffinian 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, 565166546 + ... + 565166555.

It is an arithmetic number, because the mean of its divisors is an integer number (1695499653).

Almost surely, 2^5651665505 is an apocalyptic number.

It is an amenable number.

5651665505 is a deficient number, since it is larger than the sum of its proper divisors (1130333107).

5651665505 is a wasteful number, since it uses less digits than its factorization.

5651665505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130333106.

The product of its (nonzero) digits is 675000, while the sum is 44.

The square root of 5651665505 is about 75177.5598499978. The cubic root of 5651665505 is about 1781.2524855942.

The spelling of 5651665505 in words is "five billion, six hundred fifty-one million, six hundred sixty-five thousand, five hundred five".