50331661 has 4 divisors (see below), whose sum is σ = 51184800. Its totient is φ = 49478524.

The previous prime is 50331653. The next prime is 50331683. The reversal of 50331661 is 16613305.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50331661 - 2³ = 50331653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50331691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426481 + ... + 426598.

It is an arithmetic number, because the mean of its divisors is an integer number (12796200).

Almost surely, 2^50331661 is an apocalyptic number.

It is an amenable number.

50331661 is a deficient number, since it is larger than the sum of its proper divisors (853139).

50331661 is an equidigital number, since it uses as much as digits as its factorization.

50331661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853138.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 50331661 is about 7094.4810240073. The cubic root of 50331661 is about 369.2159217866.

Adding to 50331661 its reverse (16613305), we get a palindrome (66944966).

The spelling of 50331661 in words is "fifty million, three hundred thirty-one thousand, six hundred sixty-one".