2251371 has 4 divisors (see below), whose sum is σ = 3001832. Its totient is φ = 1500912.

The previous prime is 2251369. The next prime is 2251373. The reversal of 2251371 is 1731522.

2251371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (2251369) and next prime (2251373).

It is not a de Polignac number, because 2251371 - 2¹ = 2251369 is a prime.

It is a D-number.

It is a Duffinian number.

2251371 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2251373) 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 3 ways as a sum of consecutive naturals, for example, 375226 + ... + 375231.

It is an arithmetic number, because the mean of its divisors is an integer number (750458).

2^2251371 is an apocalyptic number.

2251371 is a deficient number, since it is larger than the sum of its proper divisors (750461).

2251371 is an equidigital number, since it uses as much as digits as its factorization.

2251371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750460.

The product of its digits is 420, while the sum is 21.

The square root of 2251371 is about 1500.4569304049. The cubic root of 2251371 is about 131.0636793913.

Adding to 2251371 its reverse (1731522), we get a palindrome (3982893).

It can be divided in two parts, 225 and 1371, that added together give a triangular number (1596 = T₅₆).

The spelling of 2251371 in words is "two million, two hundred fifty-one thousand, three hundred seventy-one".