5551711565 has 8 divisors (see below), whose sum is σ = 6771268248. Its totient is φ = 4368559680.

The previous prime is 5551711547. The next prime is 5551711579. The reversal of 5551711565 is 5651171555.

It can be written as a sum of positive squares in 4 ways, for example, as 98922916 + 5452788649 = 9946^2 + 73843^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5551711565 - 2¹⁴ = 5551695181 is a prime.

It is a super-3 number, since 3×5551711565³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9100862 + ... + 9101471.

It is an arithmetic number, because the mean of its divisors is an integer number (846408531).

Almost surely, 2^5551711565 is an apocalyptic number.

It is an amenable number.

5551711565 is a deficient number, since it is larger than the sum of its proper divisors (1219556683).

5551711565 is a wasteful number, since it uses less digits than its factorization.

5551711565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18202399.

The product of its digits is 131250, while the sum is 41.

The square root of 5551711565 is about 74509.8085153894. The cubic root of 5551711565 is about 1770.6890361050.

The spelling of 5551711565 in words is "five billion, five hundred fifty-one million, seven hundred eleven thousand, five hundred sixty-five".