50506665 has 32 divisors (see below), whose sum is σ = 90550656. Its totient is φ = 23823360.

The previous prime is 50506613. The next prime is 50506669. The reversal of 50506665 is 56660505.

It is not a de Polignac number, because 50506665 - 2¹¹ = 50504617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50506669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1969 + ... + 10241.

It is an arithmetic number, because the mean of its divisors is an integer number (2829708).

Almost surely, 2^50506665 is an apocalyptic number.

50506665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

50506665 is a deficient number, since it is larger than the sum of its proper divisors (40043991).

50506665 is a wasteful number, since it uses less digits than its factorization.

50506665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8329.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 50506665 is about 7106.8041340676. The cubic root of 50506665 is about 369.6433500225.

The spelling of 50506665 in words is "fifty million, five hundred six thousand, six hundred sixty-five".