2244561 has 16 divisors (see below), whose sum is σ = 3457728. Its totient is φ = 1280000.

The previous prime is 2244559. The next prime is 2244563. The reversal of 2244561 is 1654422.

2244561 = T₈₉ + T₉₀ + ... + T₂₄₁.

It is an interprime number because it is at equal distance from previous prime (2244559) and next prime (2244563).

It is a 4-Lehmer number, since φ(2244561) divides (2244561-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 2244561 - 2¹ = 2244559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2244563) 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, 1440 + ... + 2561.

It is an arithmetic number, because the mean of its divisors is an integer number (216108).

2^2244561 is an apocalyptic number.

It is an amenable number.

2244561 is a deficient number, since it is larger than the sum of its proper divisors (1213167).

2244561 is a wasteful number, since it uses less digits than its factorization.

2244561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4032.

The product of its digits is 1920, while the sum is 24.

The square root of 2244561 is about 1498.1859030174. The cubic root of 2244561 is about 130.9313977577.

Adding to 2244561 its reverse (1654422), we get a palindrome (3898983).

It can be divided in two parts, 2244 and 561, that multiplied together give a square (1258884 = 1122²).

The spelling of 2244561 in words is "two million, two hundred forty-four thousand, five hundred sixty-one".