2247561 has 8 divisors (see below), whose sum is σ = 3329760. Its totient is φ = 1498356.

The previous prime is 2247559. The next prime is 2247569. The reversal of 2247561 is 1657422.

It is not a de Polignac number, because 2247561 - 2¹ = 2247559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 83243 = 2247561 / (2 + 2 + 4 + 7 + 5 + 6 + 1).

It is an Ulam number.

2247561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2247569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41595 + ... + 41648.

It is an arithmetic number, because the mean of its divisors is an integer number (416220).

2^2247561 is an apocalyptic number.

It is an amenable number.

2247561 is a deficient number, since it is larger than the sum of its proper divisors (1082199).

2247561 is an equidigital number, since it uses as much as digits as its factorization.

2247561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83252 (or 83246 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 2247561 is about 1499.1867795575. The cubic root of 2247561 is about 130.9897045305.

The spelling of 2247561 in words is "two million, two hundred forty-seven thousand, five hundred sixty-one".