2852781 has 4 divisors (see below), whose sum is σ = 3803712. Its totient is φ = 1901852.

The previous prime is 2852779. The next prime is 2852797. The reversal of 2852781 is 1872582.

2852781 = 559² + 560² + ... + 567².

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2852781 - 2¹ = 2852779 is a prime.

It is a super-2 number, since 2×2852781² = 16276718867922, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2852711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475461 + ... + 475466.

It is an arithmetic number, because the mean of its divisors is an integer number (950928).

2^2852781 is an apocalyptic number.

It is an amenable number.

2852781 is a deficient number, since it is larger than the sum of its proper divisors (950931).

2852781 is an equidigital number, since it uses as much as digits as its factorization.

2852781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950930.

The product of its digits is 8960, while the sum is 33.

The square root of 2852781 is about 1689.0177618959. The cubic root of 2852781 is about 141.8260947187.

The spelling of 2852781 in words is "two million, eight hundred fifty-two thousand, seven hundred eighty-one".