2865251 has 4 divisors (see below), whose sum is σ = 2901600. Its totient is φ = 2828904.

The previous prime is 2865241. The next prime is 2865259. The reversal of 2865251 is 1525682.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2865251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2865259) 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, 18056 + ... + 18213.

It is an arithmetic number, because the mean of its divisors is an integer number (725400).

2^2865251 is an apocalyptic number.

2865251 is a deficient number, since it is larger than the sum of its proper divisors (36349).

2865251 is an equidigital number, since it uses as much as digits as its factorization.

2865251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36348.

The product of its digits is 4800, while the sum is 29.

The square root of 2865251 is about 1692.7052312792. The cubic root of 2865251 is about 142.0324431590.

The spelling of 2865251 in words is "two million, eight hundred sixty-five thousand, two hundred fifty-one".