2050661571 has 16 divisors (see below), whose sum is σ = 3126700800. Its totient is φ = 1171100448.

The previous prime is 2050661551. The next prime is 2050661573. The reversal of 2050661571 is 1751660502.

It is not a de Polignac number, because 2050661571 - 2¹⁵ = 2050628803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2050661573) 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, 7320 + ... + 64458.

It is an arithmetic number, because the mean of its divisors is an integer number (195418800).

Almost surely, 2^2050661571 is an apocalyptic number.

2050661571 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2050661571 is a deficient number, since it is larger than the sum of its proper divisors (1076039229).

2050661571 is a wasteful number, since it uses less digits than its factorization.

2050661571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58858.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 2050661571 is about 45284.2309308660. The cubic root of 2050661571 is about 1270.4707311150.

The spelling of 2050661571 in words is "two billion, fifty million, six hundred sixty-one thousand, five hundred seventy-one".