2806522 has 4 divisors (see below), whose sum is σ = 4209786. Its totient is φ = 1403260.

The previous prime is 2806519. The next prime is 2806537. The reversal of 2806522 is 2256082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2653641 + 152881 = 1629^2 + 391^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 701629 + ... + 701632.

2^2806522 is an apocalyptic number.

2806522 is a deficient number, since it is larger than the sum of its proper divisors (1403264).

2806522 is a wasteful number, since it uses less digits than its factorization.

2806522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403263.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2806522 is about 1675.2677397956. The cubic root of 2806522 is about 141.0553242648.

The spelling of 2806522 in words is "two million, eight hundred six thousand, five hundred twenty-two".