2056515101 has 4 divisors (see below), whose sum is σ = 2056611900. Its totient is φ = 2056418304.

The previous prime is 2056515073. The next prime is 2056515113. The reversal of 2056515101 is 1015156502.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1487644900 + 568870201 = 38570^2 + 23851^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2056515101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056515121) 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 3 ways as a sum of consecutive naturals, for example, 1166 + ... + 64143.

It is an arithmetic number, because the mean of its divisors is an integer number (514152975).

Almost surely, 2^2056515101 is an apocalyptic number.

It is an amenable number.

2056515101 is a deficient number, since it is larger than the sum of its proper divisors (96799).

2056515101 is an equidigital number, since it uses as much as digits as its factorization.

2056515101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96798.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 2056515101 is about 45348.8158720820. The cubic root of 2056515101 is about 1271.6784184110.

The spelling of 2056515101 in words is "two billion, fifty-six million, five hundred fifteen thousand, one hundred one".