2105521054 has 32 divisors (see below), whose sum is σ = 4012517376. Its totient is φ = 806081760.

The previous prime is 2105521037. The next prime is 2105521109. The reversal of 2105521054 is 4501255012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180952 + ... + 192235.

It is an arithmetic number, because the mean of its divisors is an integer number (125391168).

Almost surely, 2^2105521054 is an apocalyptic number.

2105521054 is a deficient number, since it is larger than the sum of its proper divisors (1906996322).

2105521054 is a wasteful number, since it uses less digits than its factorization.

2105521054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373240.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 2105521054 is about 45885.9570457019. The cubic root of 2105521054 is about 1281.7004284442.

Adding to 2105521054 its reverse (4501255012), we get a palindrome (6606776066).

The spelling of 2105521054 in words is "two billion, one hundred five million, five hundred twenty-one thousand, fifty-four".