2800253 has 4 divisors (see below), whose sum is σ = 2825148. Its totient is φ = 2775360.

The previous prime is 2800249. The next prime is 2800267. The reversal of 2800253 is 3520082.

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

It can be written as a sum of positive squares in 2 ways, for example, as 407044 + 2393209 = 638^2 + 1547^2 .

It is a cyclic number.

It is not a de Polignac number, because 2800253 - 2² = 2800249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2800283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12278 + ... + 12503.

It is an arithmetic number, because the mean of its divisors is an integer number (706287).

2^2800253 is an apocalyptic number.

It is an amenable number.

2800253 is a deficient number, since it is larger than the sum of its proper divisors (24895).

2800253 is a wasteful number, since it uses less digits than its factorization.

2800253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24894.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2800253 is about 1673.3956495701. The cubic root of 2800253 is about 140.9502196720.

The spelling of 2800253 in words is "two million, eight hundred thousand, two hundred fifty-three".