50666565 has 16 divisors (see below), whose sum is σ = 81334656. Its totient is φ = 26932800.

The previous prime is 50666557. The next prime is 50666591. The reversal of 50666565 is 56566605.

It is a happy number.

It is not a de Polignac number, because 50666565 - 2³ = 50666557 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 766 + ... + 10095.

It is an arithmetic number, because the mean of its divisors is an integer number (5083416).

Almost surely, 2^50666565 is an apocalyptic number.

It is an amenable number.

50666565 is a deficient number, since it is larger than the sum of its proper divisors (30668091).

50666565 is a wasteful number, since it uses less digits than its factorization.

50666565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11180.

The product of its (nonzero) digits is 162000, while the sum is 39.

The square root of 50666565 is about 7118.0450265505. The cubic root of 50666565 is about 370.0330260269.

The spelling of 50666565 in words is "fifty million, six hundred sixty-six thousand, five hundred sixty-five".