2851261 has 6 divisors (see below), whose sum is σ = 3316830. Its totient is φ = 2443896.

The previous prime is 2851253. The next prime is 2851267. The reversal of 2851261 is 1621582.

2851261 is nontrivially palindromic in base 6.

It can be written as a sum of positive squares in only one way, i.e., 1863225 + 988036 = 1365^2 + 994^2 .

It is not a de Polignac number, because 2851261 - 2³ = 2851253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2851267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29046 + ... + 29143.

It is an arithmetic number, because the mean of its divisors is an integer number (552805).

2^2851261 is an apocalyptic number.

It is an amenable number.

2851261 is a deficient number, since it is larger than the sum of its proper divisors (465569).

2851261 is an equidigital number, since it uses as much as digits as its factorization.

2851261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58203 (or 58196 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 2851261 is about 1688.5677362783. The cubic root of 2851261 is about 141.8009012948.

The spelling of 2851261 in words is "two million, eight hundred fifty-one thousand, two hundred sixty-one".