2785261 has 2 divisors, whose sum is σ = 2785262. Its totient is φ = 2785260.

The previous prime is 2785241. The next prime is 2785273. The reversal of 2785261 is 1625872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2418025 + 367236 = 1555^2 + 606^2 .

It is a cyclic number.

It is not a de Polignac number, because 2785261 - 2¹¹ = 2783213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2785201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392630 + 1392631.

It is an arithmetic number, because the mean of its divisors is an integer number (1392631).

2^2785261 is an apocalyptic number.

It is an amenable number.

2785261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2785261 is an equidigital number, since it uses as much as digits as its factorization.

2785261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 2785261 is about 1668.9101234039. The cubic root of 2785261 is about 140.6982295797.

The spelling of 2785261 in words is "two million, seven hundred eighty-five thousand, two hundred sixty-one".