2851393 has 4 divisors (see below), whose sum is σ = 3019140. Its totient is φ = 2683648.

The previous prime is 2851391. The next prime is 2851397. The reversal of 2851393 is 3931582.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1817104 + 1034289 = 1348^2 + 1017^2 .

It is a cyclic number.

It is not a de Polignac number, because 2851393 - 2¹ = 2851391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2851391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83848 + ... + 83881.

It is an arithmetic number, because the mean of its divisors is an integer number (754785).

2^2851393 is an apocalyptic number.

It is an amenable number.

2851393 is a deficient number, since it is larger than the sum of its proper divisors (167747).

2851393 is a wasteful number, since it uses less digits than its factorization.

2851393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167746.

The product of its digits is 6480, while the sum is 31.

The square root of 2851393 is about 1688.6068222058. The cubic root of 2851393 is about 141.8030894998.

The spelling of 2851393 in words is "two million, eight hundred fifty-one thousand, three hundred ninety-three".