2100056 has 16 divisors (see below), whose sum is σ = 4500240. Its totient is φ = 900000.

The previous prime is 2100053. The next prime is 2100071. The reversal of 2100056 is 6500012.

2100056 = T₂₉₅ + T₂₉₆ + ... + T₃₃₆.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a self number, because there is not a number n which added to its sum of digits gives 2100056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18695 + ... + 18806.

It is an arithmetic number, because the mean of its divisors is an integer number (281265).

2^2100056 is an apocalyptic number.

It is an amenable number.

2100056 is an abundant number, since it is smaller than the sum of its proper divisors (2400184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2100056 is a wasteful number, since it uses less digits than its factorization.

2100056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37514 (or 37510 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 2100056 is about 1449.1569963258. The cubic root of 2100056 is about 128.0590547812.

Adding to 2100056 its reverse (6500012), we get a palindrome (8600068).

The spelling of 2100056 in words is "two million, one hundred thousand, fifty-six".