2780253 has 12 divisors (see below), whose sum is σ = 4589728. Its totient is φ = 1588680.

The previous prime is 2780243. The next prime is 2780273. The reversal of 2780253 is 3520872.

It is not a de Polignac number, because 2780253 - 2⁹ = 2779741 is a prime.

It is a Duffinian number.

2780253 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22003 + ... + 22128.

2^2780253 is an apocalyptic number.

It is an amenable number.

2780253 is a deficient number, since it is larger than the sum of its proper divisors (1809475).

2780253 is a wasteful number, since it uses less digits than its factorization.

2780253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44144 (or 44141 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 2780253 is about 1667.4090679854. The cubic root of 2780253 is about 140.6138521533.

The spelling of 2780253 in words is "two million, seven hundred eighty thousand, two hundred fifty-three".