2050530991 has 8 divisors (see below), whose sum is σ = 2168304768. Its totient is φ = 1935984000.

The previous prime is 2050530967. The next prime is 2050531001. The reversal of 2050530991 is 1990350502.

It is a happy number.

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 2050530991 - 2⁹ = 2050530479 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 (2050530941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 805390 + ... + 807931.

It is an arithmetic number, because the mean of its divisors is an integer number (271038096).

Almost surely, 2^2050530991 is an apocalyptic number.

2050530991 is a deficient number, since it is larger than the sum of its proper divisors (117773777).

2050530991 is a wasteful number, since it uses less digits than its factorization.

2050530991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613393.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 2050530991 is about 45282.7891256711. The cubic root of 2050530991 is about 1270.4437639496.

The spelling of 2050530991 in words is "two billion, fifty million, five hundred thirty thousand, nine hundred ninety-one".