2251705 has 16 divisors (see below), whose sum is σ = 2857680. Its totient is φ = 1700608.

The previous prime is 2251703. The next prime is 2251727. The reversal of 2251705 is 5071522.

2251705 = 90² + 91² + ... + 195².

It can be written as a sum of positive squares in 8 ways, for example, as 238144 + 2013561 = 488^2 + 1419^2 .

It is a cyclic number.

It is not a de Polignac number, because 2251705 - 2¹ = 2251703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2251703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7539 + ... + 7831.

It is an arithmetic number, because the mean of its divisors is an integer number (178605).

2^2251705 is an apocalyptic number.

It is an amenable number.

2251705 is a deficient number, since it is larger than the sum of its proper divisors (605975).

2251705 is a wasteful number, since it uses less digits than its factorization.

2251705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 2251705 is about 1500.5682257065. The cubic root of 2251705 is about 131.0701603466.

The spelling of 2251705 in words is "two million, two hundred fifty-one thousand, seven hundred five".