2257481 has 12 divisors (see below), whose sum is σ = 2481948. Its totient is φ = 2045952.

The previous prime is 2257471. The next prime is 2257483. The reversal of 2257481 is 1847522.

It can be written as a sum of positive squares in 6 ways, for example, as 672400 + 1585081 = 820^2 + 1259^2 .

It is not a de Polignac number, because 2257481 - 2¹⁸ = 1995337 is a prime.

It is a super-2 number, since 2×2257481² = 10192440930722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23225 + ... + 23321.

It is an arithmetic number, because the mean of its divisors is an integer number (206829).

2^2257481 is an apocalyptic number.

It is an amenable number.

2257481 is a deficient number, since it is larger than the sum of its proper divisors (224467).

2257481 is an equidigital number, since it uses as much as digits as its factorization.

2257481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 151 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 2257481 is about 1502.4915973143. The cubic root of 2257481 is about 131.1821369506.

Subtracting from 2257481 its product of digits (4480), we obtain a square (2253001 = 1501²).

The spelling of 2257481 in words is "two million, two hundred fifty-seven thousand, four hundred eighty-one".