2050421555 has 32 divisors (see below), whose sum is σ = 3032824704. Its totient is φ = 1295917056.

The previous prime is 2050421519. The next prime is 2050421557. The reversal of 2050421555 is 5551240502.

It is not a de Polignac number, because 2050421555 - 2¹⁰ = 2050420531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2050421557) 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 31 ways as a sum of consecutive naturals, for example, 341459 + ... + 347411.

It is an arithmetic number, because the mean of its divisors is an integer number (94775772).

Almost surely, 2^2050421555 is an apocalyptic number.

2050421555 is a deficient number, since it is larger than the sum of its proper divisors (982403149).

2050421555 is a wasteful number, since it uses less digits than its factorization.

2050421555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6735.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 2050421555 is about 45281.5807475843. The cubic root of 2050421555 is about 1270.4211625262.

The spelling of 2050421555 in words is "two billion, fifty million, four hundred twenty-one thousand, five hundred fifty-five".