50206661 has 8 divisors (see below), whose sum is σ = 53544960. Its totient is φ = 46911168.

The previous prime is 50206657. The next prime is 50206679. The reversal of 50206661 is 16660205.

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

It is a cyclic number.

It is not a de Polignac number, because 50206661 - 2² = 50206657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50206661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50206601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8261 + ... + 12986.

It is an arithmetic number, because the mean of its divisors is an integer number (6693120).

Almost surely, 2^50206661 is an apocalyptic number.

It is an amenable number.

50206661 is a deficient number, since it is larger than the sum of its proper divisors (3338299).

50206661 is a wasteful number, since it uses less digits than its factorization.

50206661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21403.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 50206661 is about 7085.6658826112. The cubic root of 50206661 is about 368.9100159302.

Adding to 50206661 its reverse (16660205), we get a palindrome (66866866).

The spelling of 50206661 in words is "fifty million, two hundred six thousand, six hundred sixty-one".