2100975 has 24 divisors (see below), whose sum is σ = 3519120. Its totient is φ = 1105920.

The previous prime is 2100953. The next prime is 2100983. The reversal of 2100975 is 5790012.

2100975 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2100975 - 2⁸ = 2100719 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8047 + ... + 8303.

It is an arithmetic number, because the mean of its divisors is an integer number (146630).

2^2100975 is an apocalyptic number.

2100975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2100975 is a deficient number, since it is larger than the sum of its proper divisors (1418145).

2100975 is a wasteful number, since it uses less digits than its factorization.

2100975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 2100975 is about 1449.4740425409. The cubic root of 2100975 is about 128.0777319195.

Adding to 2100975 its reverse (5790012), we get a palindrome (7890987).

The spelling of 2100975 in words is "two million, one hundred thousand, nine hundred seventy-five".