2240569 has 4 divisors (see below), whose sum is σ = 2317860. Its totient is φ = 2163280.

The previous prime is 2240551. The next prime is 2240573. The reversal of 2240569 is 9650422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9650422 = 2 ⋅4825211.

It can be written as a sum of positive squares in 2 ways, for example, as 1452025 + 788544 = 1205^2 + 888^2 .

It is a cyclic number.

It is not a de Polignac number, because 2240569 - 2⁹ = 2240057 is a prime.

It is a super-2 number, since 2×2240569² = 10040298887522, 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 (2240369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38602 + ... + 38659.

It is an arithmetic number, because the mean of its divisors is an integer number (579465).

2^2240569 is an apocalyptic number.

2240569 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2240569 is a deficient number, since it is larger than the sum of its proper divisors (77291).

2240569 is an equidigital number, since it uses as much as digits as its factorization.

2240569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77290.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2240569 is about 1496.8530321979. The cubic root of 2240569 is about 130.8537302597.

It can be divided in two parts, 2240 and 569, that added together give a square (2809 = 53²).

The spelling of 2240569 in words is "two million, two hundred forty thousand, five hundred sixty-nine".