2101275 has 48 divisors (see below), whose sum is σ = 4225920. Its totient is φ = 1015200.

The previous prime is 2101261. The next prime is 2101277. The reversal of 2101275 is 5721012.

It is not a de Polignac number, because 2101275 - 2⁴ = 2101259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101277) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7284 + ... + 7566.

It is an arithmetic number, because the mean of its divisors is an integer number (88040).

2^2101275 is an apocalyptic number.

2101275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2101275 is an abundant number, since it is smaller than the sum of its proper divisors (2124645).

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

2101275 is a wasteful number, since it uses less digits than its factorization.

2101275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 2101275 is about 1449.5775246602. The cubic root of 2101275 is about 128.0838277386.

Adding to 2101275 its reverse (5721012), we get a palindrome (7822287).

It can be divided in two parts, 2101 and 275, that multiplied together give a palindrome (577775).

The spelling of 2101275 in words is "two million, one hundred one thousand, two hundred seventy-five".