2100562 has 4 divisors (see below), whose sum is σ = 3150846. Its totient is φ = 1050280.

The previous prime is 2100559. The next prime is 2100563. The reversal of 2100562 is 2650012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2099601 + 961 = 1449^2 + 31^2 .

It is not an unprimeable number, because it can be changed into a prime (2100563) 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 as a sum of consecutive naturals, namely, 525139 + ... + 525142.

2^2100562 is an apocalyptic number.

2100562 is a deficient number, since it is larger than the sum of its proper divisors (1050284).

2100562 is a wasteful number, since it uses less digits than its factorization.

2100562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050283.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2100562 is about 1449.3315700695. The cubic root of 2100562 is about 128.0693390591.

Adding to 2100562 its reverse (2650012), we get a palindrome (4750574).

It can be divided in two parts, 2100 and 562, that added together give a palindrome (2662).

The spelling of 2100562 in words is "two million, one hundred thousand, five hundred sixty-two".