2251856 has 10 divisors (see below), whose sum is σ = 4363002. Its totient is φ = 1125920.

The previous prime is 2251849. The next prime is 2251859. The reversal of 2251856 is 6581522.

It can be written as a sum of positive squares in only one way, i.e., 1915456 + 336400 = 1384^2 + 580^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70355 + ... + 70386.

2^2251856 is an apocalyptic number.

It is an amenable number.

2251856 is a deficient number, since it is larger than the sum of its proper divisors (2111146).

2251856 is a wasteful number, since it uses less digits than its factorization.

2251856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140749 (or 140743 counting only the distinct ones).

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

The square root of 2251856 is about 1500.6185391364. The cubic root of 2251856 is about 131.0730901489.

The spelling of 2251856 in words is "two million, two hundred fifty-one thousand, eight hundred fifty-six".