50051661 has 16 divisors (see below), whose sum is σ = 73528128. Its totient is φ = 30032000.

The previous prime is 50051629. The next prime is 50051669. The reversal of 50051661 is 16615005.

It is a cyclic number.

It is not a de Polignac number, because 50051661 - 2⁵ = 50051629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50051669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4176 + ... + 10841.

It is an arithmetic number, because the mean of its divisors is an integer number (4595508).

Almost surely, 2^50051661 is an apocalyptic number.

It is an amenable number.

50051661 is a deficient number, since it is larger than the sum of its proper divisors (23476467).

50051661 is a wasteful number, since it uses less digits than its factorization.

50051661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15132.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 50051661 is about 7074.7198531108. The cubic root of 50051661 is about 368.5299866914.

Adding to 50051661 its reverse (16615005), we get a palindrome (66666666).

It can be divided in two parts, 5005 and 1661, that added together give a palindrome (6666).

The spelling of 50051661 in words is "fifty million, fifty-one thousand, six hundred sixty-one".