1020550405 has 16 divisors (see below), whose sum is σ = 1400624640. Its totient is φ = 699299712.

The previous prime is 1020550403. The next prime is 1020550417. The reversal of 1020550405 is 5040550201.

1020550405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1020550405 - 2¹ = 1020550403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020550403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42241 + ... + 61849.

It is an arithmetic number, because the mean of its divisors is an integer number (87539040).

Almost surely, 2^1020550405 is an apocalyptic number.

It is an amenable number.

1020550405 is a deficient number, since it is larger than the sum of its proper divisors (380074235).

1020550405 is a wasteful number, since it uses less digits than its factorization.

1020550405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21108.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1020550405 is about 31946.0546077289. The cubic root of 1020550405 is about 1006.8037391499.

The spelling of 1020550405 in words is "one billion, twenty million, five hundred fifty thousand, four hundred five".