2851566 has 16 divisors (see below), whose sum is σ = 5887488. Its totient is φ = 919800.

The previous prime is 2851561. The next prime is 2851571. The reversal of 2851566 is 6651582.

It is an interprime number because it is at equal distance from previous prime (2851561) and next prime (2851571).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2851561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7480 + ... + 7851.

It is an arithmetic number, because the mean of its divisors is an integer number (367968).

2^2851566 is an apocalyptic number.

2851566 is an abundant number, since it is smaller than the sum of its proper divisors (3035922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2851566 is a wasteful number, since it uses less digits than its factorization.

2851566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15367.

The product of its digits is 14400, while the sum is 33.

The square root of 2851566 is about 1688.6580470895. The cubic root of 2851566 is about 141.8059572722.

The spelling of 2851566 in words is "two million, eight hundred fifty-one thousand, five hundred sixty-six".