50556665 has 4 divisors (see below), whose sum is σ = 60668004. Its totient is φ = 40445328.

The previous prime is 50556643. The next prime is 50556679. The reversal of 50556665 is 56665505.

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 14891881 + 35664784 = 3859^2 + 5972^2 .

It is a cyclic number.

It is not a de Polignac number, because 50556665 - 2⁶ = 50556601 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, 5055662 + ... + 5055671.

It is an arithmetic number, because the mean of its divisors is an integer number (15167001).

Almost surely, 2^50556665 is an apocalyptic number.

It is an amenable number.

50556665 is a deficient number, since it is larger than the sum of its proper divisors (10111339).

50556665 is a wasteful number, since it uses less digits than its factorization.

50556665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10111338.

The product of its (nonzero) digits is 135000, while the sum is 38.

The square root of 50556665 is about 7110.3210194758. The cubic root of 50556665 is about 369.7652881993.

The spelling of 50556665 in words is "fifty million, five hundred fifty-six thousand, six hundred sixty-five".