2780275 has 6 divisors (see below), whose sum is σ = 3447572. Its totient is φ = 2224200.

The previous prime is 2780273. The next prime is 2780303. The reversal of 2780275 is 5720872.

It is not a de Polignac number, because 2780275 - 2¹ = 2780273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2780273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55581 + ... + 55630.

2^2780275 is an apocalyptic number.

2780275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2780275 is a deficient number, since it is larger than the sum of its proper divisors (667297).

2780275 is a wasteful number, since it uses less digits than its factorization.

2780275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111221 (or 111216 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 2780275 is about 1667.4156650338. The cubic root of 2780275 is about 140.6142230424.

The spelling of 2780275 in words is "two million, seven hundred eighty thousand, two hundred seventy-five".