2057721106 has 16 divisors (see below), whose sum is σ = 3735023616. Its totient is φ = 830005056.

The previous prime is 2057721103. The next prime is 2057721139. The reversal of 2057721106 is 6011277502.

It is not an unprimeable number, because it can be changed into a prime (2057721103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4322706 + ... + 4323181.

It is an arithmetic number, because the mean of its divisors is an integer number (233438976).

Almost surely, 2^2057721106 is an apocalyptic number.

2057721106 is a deficient number, since it is larger than the sum of its proper divisors (1677302510).

2057721106 is a wasteful number, since it uses less digits than its factorization.

2057721106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8645913.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 2057721106 is about 45362.1109076727. The cubic root of 2057721106 is about 1271.9269538799.

Adding to 2057721106 its reverse (6011277502), we get a palindrome (8068998608).

The spelling of 2057721106 in words is "two billion, fifty-seven million, seven hundred twenty-one thousand, one hundred six".