2240351561 has 32 divisors (see below), whose sum is σ = 2678151168. Its totient is φ = 1834335360.

The previous prime is 2240351507. The next prime is 2240351569. The reversal of 2240351561 is 1651530422.

It is a cyclic number.

It is not a de Polignac number, because 2240351561 - 2¹⁴ = 2240335177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2240351569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5057006 + ... + 5057448.

It is an arithmetic number, because the mean of its divisors is an integer number (83692224).

Almost surely, 2^2240351561 is an apocalyptic number.

It is an amenable number.

2240351561 is a deficient number, since it is larger than the sum of its proper divisors (437799607).

2240351561 is a wasteful number, since it uses less digits than its factorization.

2240351561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2240351561 is about 47332.3521600184. The cubic root of 2240351561 is about 1308.4949716461.

Adding to 2240351561 its reverse (1651530422), we get a palindrome (3891881983).

The spelling of 2240351561 in words is "two billion, two hundred forty million, three hundred fifty-one thousand, five hundred sixty-one".