2100265 has 8 divisors (see below), whose sum is σ = 2668680. Its totient is φ = 1581312.

The previous prime is 2100257. The next prime is 2100269. The reversal of 2100265 is 5620012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 589824 + 1510441 = 768^2 + 1229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2100265 - 2³ = 2100257 is a prime.

It is a super-2 number, since 2×2100265² = 8822226140450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2100269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12270 + ... + 12439.

It is an arithmetic number, because the mean of its divisors is an integer number (333585).

2^2100265 is an apocalyptic number.

It is an amenable number.

2100265 is a deficient number, since it is larger than the sum of its proper divisors (568415).

2100265 is a wasteful number, since it uses less digits than its factorization.

2100265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24731.

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

The square root of 2100265 is about 1449.2291054212. The cubic root of 2100265 is about 128.0633028353.

Adding to 2100265 its reverse (5620012), we get a palindrome (7720277).

The spelling of 2100265 in words is "two million, one hundred thousand, two hundred sixty-five".