2281251 has 8 divisors (see below), whose sum is σ = 3476224. Its totient is φ = 1303560.

The previous prime is 2281249. The next prime is 2281267. The reversal of 2281251 is 1521822.

It is a happy number.

2281251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2281251 - 2¹ = 2281249 is a prime.

It is a super-2 number, since 2×2281251² = 10408212250002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 108631 = 2281251 / (2 + 2 + 8 + 1 + 2 + 5 + 1).

It is a Duffinian number.

2281251 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2281211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54295 + ... + 54336.

It is an arithmetic number, because the mean of its divisors is an integer number (434528).

2^2281251 is an apocalyptic number.

2281251 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2281251 is a deficient number, since it is larger than the sum of its proper divisors (1194973).

2281251 is a wasteful number, since it uses less digits than its factorization.

2281251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108641.

The product of its digits is 320, while the sum is 21.

The square root of 2281251 is about 1510.3810777416. The cubic root of 2281251 is about 131.6409549395.

The spelling of 2281251 in words is "two million, two hundred eighty-one thousand, two hundred fifty-one".