2785901 has 2 divisors, whose sum is σ = 2785902. Its totient is φ = 2785900.

The previous prime is 2785891. The next prime is 2785903. The reversal of 2785901 is 1095872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2253001 + 532900 = 1501^2 + 730^2 .

It is a cyclic number.

It is not a de Polignac number, because 2785901 - 2¹⁸ = 2523757 is a prime.

It is a super-2 number, since 2×2785901² = 15522488763602, which contains 22 as substring.

Together with 2785903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2785903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392950 + 1392951.

It is an arithmetic number, because the mean of its divisors is an integer number (1392951).

2^2785901 is an apocalyptic number.

It is an amenable number.

2785901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2785901 is an equidigital number, since it uses as much as digits as its factorization.

2785901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 2785901 is about 1669.1018542917. The cubic root of 2785901 is about 140.7090053467.

The spelling of 2785901 in words is "two million, seven hundred eighty-five thousand, nine hundred one".